UNITED STATES
                       Securities and Exchange Commission
                             Washington, D.C. 20549

                                  SCHEDULE 14A
           Proxy Statement Pursuant to Section 14(a) of the Securities
                     Exchange Act of 1934 (Amendment No. __)

Filed by the registrant |X|
Filed by a party other than the registrant |_|
Check the appropriate box:
|_|   Preliminary proxy statement
|_|   Confidential-For Use of the Commission Only
      (as permitted by Rule 14a-6(e)(2))
|X|   Definitive proxy statement
|_|   Definitive additional materials
|_|   Soliciting material pursuant to Section 240. 14a-12

                           Hudson Technologies, Inc.
                           -------------------------
                (Name of Registrant as Specified in Its Charter)

________________________________________________________________________________
    (Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of filing fee (Check the appropriate box):
      |X|   No fee required.
      |_|   Fee computed on table below per Exchange Act Rules 14a-6(i) (4) and
            0-11.

            (1) Title of each class of securities to which transaction applies:

________________________________________________________________________________

            (2) Aggregate number of securities to which transaction applies:

________________________________________________________________________________
            (3) Per unit price or other underlying value of transaction computed
      pursuant to Exchange Act Rule 0-11 (Set forth the amount on which the
      filing fee is calculated and state how it was determined).

________________________________________________________________________________
            (4) Proposed maximum aggregate value of transaction:

________________________________________________________________________________
            (5) Total Fee Paid:

________________________________________________________________________________
      |_| Fee paid previously with preliminary materials.

________________________________________________________________________________
      |_| Check box if any part of the fee is offset as provided by Exchange Act
Rule 0-11(a) (2) and identify the filing for which the offsetting fee was paid
previously. Identify the previous filing by registration statement number, or
the form or schedule and the date of its filing.
      (1)   Amount previously paid:

_____________________________________________________________________________
      (2)   Form, Schedule or Registration Statement No.:

_____________________________________________________________________________
      (3)   Filing party:

_____________________________________________________________________________
      (4)   Date filed:

_____________________________________________________________________________




                            HUDSON TECHNOLOGIES, INC.
                            275 North Middletown Road
                           Pearl River, New York 10965

June 3, 2005

Dear Fellow Shareholders:

      You are  cordially  invited to attend the Annual  Meeting of  Shareholders
which will be held on Tuesday,  June 28,  2005 at 10:00 A.M.,  local time at the
Holiday Inn Suffern, 3 Executive Blvd., Suffern, New York 10901.

      The Notice of Annual Meeting and Proxy Statement which follow describe the
business to be conducted at the meeting.

      Whether  or not you plan to attend the  Annual  Meeting  in person,  it is
important that your shares be represented and voted.  After reading the enclosed
Notice of Annual Meeting and Proxy Statement, I urge you to complete, sign, date
and return  your  proxy card in the  envelope  provided.  If the  address on the
accompanying   material  is  incorrect,   please  inform  our  Transfer   Agent,
Continental  Stock Transfer & Trust Company,  at 17 Battery Place, New York, New
York 10004, in writing, of the correct address.

      Your vote is very  important,  and we will  appreciate a prompt  return of
your signed proxy card. We hope to see you at the meeting.

                                                Cordially,

                                                /s/ Kevin J. Zugibe, P.E.
                                                --------------------------------
                                                Kevin J. Zugibe, P.E.
                                                Chairman of the Board, President
                                                and Chief Executive Officer




                            HUDSON TECHNOLOGIES, INC.

                    NOTICE OF ANNUAL MEETING OF SHAREHOLDERS
                           TO BE HELD ON JUNE 28, 2005

To the Shareholders of HUDSON TECHNOLOGIES, INC.:

      NOTICE IS HEREBY GIVEN that the Annual Meeting of  Shareholders  of Hudson
Technologies,  Inc. (the  "Company")  will be held on Tuesday,  June 28, 2005 at
10:00 A.M., local time, at the Holiday Inn Suffern, 3 Executive Blvd.,  Suffern,
New York 10901 for the following purposes:

      1. To elect a class of three  directors  who shall  serve until the Annual
Meeting of Shareholders  to be held in 2007 or until their  successors have been
elected and qualified;

      2. To transact such other business as may properly come before the meeting
or any adjournment or adjournments thereof.

      Only  shareholders  of record at the close of business on June 2, 2005 are
entitled  to notice of and to vote at the  Annual  Meeting  or any  adjournments
thereof.

                                              By Order of the Board of Directors

                                              Stephen P. Mandracchia
                                              Secretary

June 3, 2005

________________________________________________________________________________

IF YOU DO NOT EXPECT TO BE PRESENT AT THE MEETING:

PLEASE FILL IN, DATE,  SIGN AND RETURN THE  ENCLOSED  PROXY CARD IN THE ENVELOPE
PROVIDED  FOR THAT  PURPOSE,  WHICH  REQUIRES NO POSTAGE IF MAILED IN THE UNITED
STATES.  THE PROXY MAY BE REVOKED AT ANY TIME PRIOR TO EXERCISE,  AND IF YOU ARE
PRESENT AT THE MEETING YOU MAY, IF YOU WISH,  REVOKE YOUR PROXY AT THAT TIME AND
EXERCISE THE RIGHT TO VOTE YOUR SHARES PERSONALLY.

________________________________________________________________________________




                                 PROXY STATEMENT

                            HUDSON TECHNOLOGIES, INC.

                         ANNUAL MEETING OF SHAREHOLDERS
                           TO BE HELD ON JUNE 28, 2005

      This proxy statement is furnished in connection  with the  solicitation of
proxies by the Board of Directors of Hudson Technologies, Inc. (the "Company" or
"Hudson") for use at the Annual Meeting of Shareholders  (the "Annual  Meeting")
to be held  on  Tuesday,  June  28,  2005,  and  including  any  adjournment  or
adjournments  thereof,  for the purposes set forth in the accompanying Notice of
Meeting.

      Management  intends to mail this proxy statement and the accompanying form
of proxy to shareholders on or about June 6, 2005.

      Proxies  in  the  accompanying  form,  duly  executed,   returned  to  the
management of the Company and not revoked,  will be voted at the Annual Meeting.
Any proxy given pursuant to such  solicitation may be revoked by the shareholder
at any time prior to the voting of the proxy by a subsequently  dated proxy,  by
written  notification  to  the  Secretary  of  the  Company,  or  by  personally
withdrawing the proxy at the Annual Meeting and voting in person.

      The address and telephone number of the principal executive offices of the
Company are:

275 North Middletown Road
Pearl River, New York  10965
Telephone No.: (845) 735-6000

                       OUTSTANDING STOCK AND VOTING RIGHTS

      Only  shareholders of record at the close of business on June 2, 2005 (the
"Record Date") are entitled to notice of and to vote at the Annual  Meeting.  As
of the Record Date, there were issued and outstanding  25,517,594  shares of the
Company's common stock, par value $.01 per share ("Common Stock") the only class
of voting  securities  of the Company.  Each share of Common Stock  entitles the
holder  thereof  to one vote on each  matter  submitted  to a vote at the Annual
Meeting.

                                VOTING PROCEDURES

      Directors  will be elected by a plurality of the votes cast by the holders
of  Common  Stock in  person  or  represented  by proxy at the  Annual  Meeting,
provided a quorum is present at the meeting.  All other matters to be acted upon
at the meeting, will be decided by the majority of the votes cast by the holders
of the shares of Common Stock present in person or  represented  by proxy at the
Annual Meeting, provided a quorum is present. A quorum will be


                                      -1-


present at the Annual  Meeting if the holders of a majority  of the  outstanding
shares  of  Common  Stock  as of the  Record  Date  are  present  in  person  or
represented  by  proxy.  Votes  will be  counted  and  certified  by one or more
Inspectors  of Election who are expected to be  employees of  Continental  Stock
Transfer & Trust Company, the Company's transfer agent.

      In accordance  with applicable  law,  abstentions  and "broker  non-votes"
(i.e.,  proxies from brokers or nominees  indicating  that such persons have not
received  instructions  from the beneficial  owners or other persons entitled to
vote shares as to a matter with  respect to which the brokers or nominees do not
have  discretionary  power to vote) will be treated as present  for  purposes of
determining the presence of a quorum. Based upon the Company's  understanding of
the  requirements  of the law of the  State of New York and the  Certificate  of
Incorporation and By-laws,  as amended (the "By-laws"),  of the Company,  "votes
cast" at a meeting of shareholders by the holders of shares entitled to vote are
determinative  of the  outcome of the matter to be voted on.  Failures  to vote,
broker non-votes and abstentions will not be considered "votes cast."

      Proxies will be voted in accordance with the instructions thereon.  Unless
otherwise  stated,  all  shares  represented  by such  proxy  will be  voted  as
instructed. Proxies may be revoked as noted above.

                                   PROPOSAL 1

                              ELECTION OF DIRECTORS

      The Company's By-laws provide that the Board of Directors (the "Board") is
divided into two classes. Each class is to have a term of two years (the term of
each  class  expiring  in  successive  years)  and is to  consist,  as nearly as
possible, of one-half of the number of directors  constituting the entire Board.
The By-laws  provide that the number of directors shall be fixed by the Board of
Directors but in any event, shall be no less than seven (7) (subject to decrease
by a resolution adopted by the shareholders).

      At the Annual  Meeting,  a class of three  directors will be elected for a
two-year term expiring at the Annual Meeting of Shareholders to be held in 2007.
Messrs. Vincent P. Abbatecola, Robert L. Burr and Otto C. Morch are the nominees
for election to such positions.  Dominic J. Monetta,  Harry C. Schell, Robert M.
Zech and Kevin J.  Zugibe  will not stand for  election  at the  Annual  Meeting
because their  respective  terms expire at the Annual Meeting of Shareholders to
be held in 2006.

      Proxies will be voted for the nominees  named below,  unless  authority is
withheld.  Should any nominee not be  available  for  election,  proxies will be
voted  for  such  substitute  nominee  as may be  designated  by  the  Board  of
Directors.  Each of the  nominees  has  indicated  to the Board  that he will be
available to serve.


                                      -2-


      The following is information  with respect to the nominees for election as
directors at the Annual Meeting:

Name                          Age           Position
----                          ---           --------

Vincent P. Abbatecola         59            Director

Robert L. Burr                54            Director

Otto C. Morch                 71            Director

      Vincent P.  Abbatecola has been a director of the Company since June 1994.
Mr.  Abbatecola  is the owner and  General  Manager of Abbey Ice & Spring  Water
Company, Spring Valley, New York, a leading ice and bottled water company in the
New York  metropolitan  area,  where he has been  employed  since May 1971.  Mr.
Abbatecola serves as a Chairman of the Board of Mid Atlantic Ice Association, an
industry trade  association.  He also serves as a Board Member and past Chairman
of the National  Packaged Ice  Association  and Past Chairman of the Food Safety
Committee of the National  Packaged Ice Association.  Mr. Abbatecola also serves
as Vice Chairman,  Board of Governors of the Rockland County Health Center,  and
is a member of St. Thomas  Aquinas  College  President's  Council,  the Rockland
Business  Association Board of Directors,  Nyack Hospital  Corporation and Union
State Bank Chairman's Council.

      Robert L. Burr has been a Director of the Company  since August 1999.  Mr.
Burr has been a Partner of Windcrest  Discovery  Investments  LLC, an investment
management firm from its inception in February 2002 and since October 2001 has a
consulting  agreement  with  J.P.  Morgan  Partners  under  which he is the lead
partner  of  Fleming US  Discovery  Partners,  L.P.,  a private  equity  sponsor
affiliated with J.P. Morgan Chase & Co. Fleming US Discovery  Partners,  L.P. is
the  general  partner of Fleming US  Discovery  Fund III,  L.P.  and  Fleming US
Discovery  Offshore Fund III, L.P. Mr. Burr was employed by J. P. Morgan Chase &
Co.  from July 1995 to October  2001.  From 1992 to 1995,  Mr.  Burr was head of
Private Equity at Kidder, Peabody & Co., Inc. Previously, Mr. Burr served as the
Managing  General  Partner of Morgan  Stanley  Ventures  and General  Partner of
Morgan Stanley Venture Capital Fund I, L.P. and was a corporate  lending officer
with  Citibank,  N.A. Mr. Burr serves on the Board of Directors of  Displaytech,
Inc. and Impax Laboratories, Inc.

      Otto C. Morch has been a director  of the Company  since  March 1996.  Mr.
Morch was Senior Vice President,  Commercial Lending, at Provident Savings Bank,
F.A., for more than five years until his retirement in December 1997.


                                      -3-


      The following is information  with respect to the directors whose terms of
office expire at the Annual Meeting of Shareholders to be held in the year 2006:

Name                        Age               Position
----                        ---               --------

Dominic J. Monetta          63                Director

Harry C. Schell             71                Director

Robert M. Zech              39                Director

Kevin J. Zugibe             41                Chairman, Chief Executive Officer

      Dominic J.  Monetta has been a director  of the Company  since April 1996.
Since 1993, Mr. Monetta has been the President of Resource Alternatives, Inc., a
corporate development firm concentrating on solving management and technological
problems  facing chief  executive  officers and their  senior  executives.  From
December 1991 to August 1993,  Mr. Monetta served as the Director of Science and
Technology  (formerly known as Director of Defense  Research and Engineering for
the Research and Advanced Technology Office) for the United States Department of
Defense.  From June 1989 to December 1991, Mr. Monetta served as the Director of
the Office of New Production Reactors of the United States Department of Energy.

      Harry C. Schell has been a director of the Company since August 1998.  Mr.
Schell has been a private  investor  since 1994.  Mr. Schell served as Chairman,
President  and Chief  Executive  Officer of BICC Cables  Corporation,  a company
engaged in the  manufacture  of wires and cable  products,  from 1990 to January
1994,  and was  President  and Chief  Executive  Officer  of BICC's  predecessor
Company,  Cablec  Corporation,  from 1984 to 1990.  Mr. Schell was President and
Chief  Executive  Officer  of Phelps  Dodge  Cable and Wire  Company,  a company
engaged in the  production of wire and cable  products,  from 1974 to 1984.  Mr.
Schell  serves  on the board of  directors  of the BICC  Group  and BICC  Cables
Corporation,   Phillips  Cables  Limited,   National  Electrical   Manufacturers
Association and the United Way of Rockland County (New York).

      Robert M. Zech has been a Director  of the  Company  since June 1999.  Mr.
Zech has been a Partner of Windcrest  Discovery  Investments  LLC, an investment
management  firm,  from its inception in February 2002 and since July 2003 has a
consulting  agreement  with J.P.  Morgan  Partners  with  respect  to Fleming US
Discovery Partners,  L.P. From April 1996 to October 2001, Mr. Zech was employed
by J.P.  Morgan  Chase & Co.,  where he was a Partner of  Fleming  US  Discovery
Partners,  L.P., the general  partner of Fleming US Discovery Fund III, L.P. and
Fleming US Discovery  Offshore Fund III, L.P. From 1994 to 1996, Mr. Zech was an
Associate with Cramer Rosenthal  McGlynn,  Inc., an investment  management firm.
Previously  Mr. Zech served as an Associate  with  Wolfensohn & Co., a mergers &
acquisitions  advisory  firm,  and was a Financial  Analyst at leveraged  buyout
sponsor  Merrill  Lynch Capital  Partners,  Inc. and in the  investment  banking
division of Merrill  Lynch & Co. Mr. Zech  serves on the Board of  Directors  of
Displaytech, Inc.


                                      -4-


      Kevin J. Zugibe,  P.E., a founder of the Company, has been Chairman of the
Board and Chief  Executive  Officer of the Company  since its inception in 1991.
From May 1987 to May 1994,  Mr.  Zugibe was  employed as a power  engineer  with
Orange and  Rockland  Utilities,  Inc.,  a major  public  utility,  where he was
responsible  for all HVAC  applications.  Mr. Zugibe is a licensed  professional
engineer, and from December 1990 to May 1994, he was a member of Kevin J. Zugibe
& Associates,  a professional engineering firm. Mr. Zugibe is the brother-in-law
of Stephen P. Mandracchia, the Company's Vice President and Secretary.

Committees of the Board of Directors

      The Company has established a  Compensation/Stock  Option Committee of the
Board of Directors,  which is responsible for  recommending  the compensation of
the Company's  executive  officers and for the  administration  of the Company's
Stock Option Plans. The members of such Committee are Messrs. Abbatecola,  Burr,
Morch and Zech.  The  Compensation/Stock  Option  Committee  held three meetings
during  Fiscal  2004.  Subsequent  to July 31,  2005,  the  compensation  of the
Company's  executive officers will be determined either by a  Compensation/Stock
Option  Committee  consisting of independent  directors,  or by the  independent
directors.  The Company also has an Audit  Committee of the Board of  Directors,
which  supervises  the audit and  financial  procedures  of the  Company  and is
responsible  for the selection of the Company's  independent  registered  public
accountants.  The members of the Audit Committee are Messrs.  Abbatecola,  Morch
and Monetta. The Board of Directors has determined that each member of the Audit
Committee  and Mr.  Schell is an  "independent  director"  within the meaning of
Nasdaq  Marketplace  Rule 4200. The Audit  Committee  held four meetings  during
Fiscal 2004. The Audit Committee has adopted a written charter,  a copy of which
is on file with the Securities and Exchange Commission (the "SEC") as Appendix A
to the  Company's  definitive  proxy  statement  on Schedule 14A relating to the
Company's 2004 Annual Meeting of  Shareholders,  which was filed with the SEC on
August 18, 2004.  The Company  also has an  Executive  Committee of the Board of
Directors,  which is authorized to exercise the powers of the Board of Directors
in the general  supervision  and control of the business  affairs of the Company
during the intervals between meetings of the board. The members of the Executive
Committee  are Messrs.  Burr,  Schell and Zugibe.  The  Company's  Occupational,
Safety and Environmental  Protection Committee is responsible for satisfying the
Board that the Company's  Environmental,  Health and Safety policies,  plans and
procedures  are  adequate.   The  members  of  the   Occupational,   Safety  and
Environmental  Protection Committee are Messrs.  Monetta and Zugibe. The Company
does not have a  nominating  committee  of the  Board or other  Board  committee
performing  similar functions and in the past all directors have participated in
the  consideration  of  director  nominations.  Each  of the  Company's  current
independent  directors has expressed  their  willingness  and desire to continue
serving on the Board and have made personal  investments in Company  stock.  The
Company  believes that due to the Company's  size and financial  condition,  the
compensation paid to directors,  the current  independent  directors'  continued
willingness  to  continue to serve under such  circumstances,  and since  Nasdaq
Marketplace rules regarding director  nominations do not apply to small business
issuers,  such as the Company,  until July 31, 2005,  that it is  unnecessary at
this time to create a nominating  committee.  However, in accordance with Nasdaq
Marketplace rule 4350, board  nominations made on or after July 31, 2005 will be
made either by a nominating committee of the Board that


                                      -5-


is comprised  solely of the  Company's  independent  directors,  or by vote of a
majority of independent directors.

Audit Committee Report

      In December  2004, the Audit  Committee met with  management to review and
discuss the audit and the procedures and timing of the audit. In March 2005, the
Audit Committee met with management to review and discuss the audited  financial
statements.  The Audit Committee also conducted  discussions  with the Company's
independent  auditors,  BDO Seidman,  LLP, regarding the matters required by the
Statement on Auditing  Standards No. 61. As required by  Independence  Standards
Board Standard No. 1, "Independence Discussion with Audit Committees," the Audit
Committee has discussed with and received the required  written  disclosures and
confirming  letter from BDO Seidman,  LLP  regarding  its  independence  and has
discussed  with BDO  Seidman,  LLP its  independence.  Based upon the review and
discussions   referred  to  above,  the  Audit  Committee   ratified  its  prior
recommendation to the Board of Directors that the audited  financial  statements
be included  in the  Company's  Annual  Report on Form 10-KSB for the year ended
December 31, 2004.

      The Audit Committee-

      Vincent Abbatecola, Otto Morch and Dominic Monetta.

Executive Officers

      In addition to Kevin J. Zugibe,  Messrs.,  Stephen P.  Mandracchia,  Brian
Coleman,  Charles  F.  Harkins,  Jr.  and James R.  Buscemi  serve as  executive
officers of the Company.  Executive  officers are elected  annually and serve at
the pleasure of the Board.  The  following is  information  with respect to such
executive officers:

      James R.  Buscemi,  51, has been Chief  Financial  Officer of the  Company
since  December  2002,  and served as  Corporate  Controller  since  joining the
Company in June 1998.  Prior to joining the  Company,  Mr.  Buscemi held various
financial  positions with Avnet,  Inc.,  including  Chief  Financial  Officer of
Avnet's electric motors and component part subsidiary, Brownell Electro, Inc.

      Brian F. Coleman,  43, has been President and Chief  Operating  Officer of
the Company since August 21, 2001 and served as Chief  Financial  Officer of the
Company from May 1997 to December 2002.  From June 1987 to May 1997, Mr. Coleman
was  employed by, and since July 1995,  was a partner of, BDO Seidman,  LLP, the
Company's independent auditors.

      Charles  F.  Harkins,  Jr.,  42,  has been  Vice  President  of Sales  and
Operations  since  December  2003.  He served as Vice  President of  Refrigerant
Product Services from October 2000 to December 2003, and has served in a variety
of capacities  since joining the Company in 1992.  Prior to joining the Company,
Mr. Harkins served in the U.S. Army for 13 years attaining


                                      -6-


the rank of Staff  Sergeant;  he is a graduate of the U.S. Army Engineer  School
and the U.S. Army Chemical School.

      Stephen P.  Mandracchia,  45, has been Vice President of the Company since
August 2003,  and has been  Secretary of the Company since April 1995. He served
as Vice  President of the Company since 1993, as Executive  Vice  President from
1997 to March 2002, and Vice President of Operation from November 2000 to August
2003. Mr.  Mandracchia is responsible for legal and regulatory affairs and human
resources  for the  Company.  Mr.  Mandracchia  was a member  of the law firm of
Martin, Vandewalle,  Donohue,  Mandracchia & McGahan, a Great Neck, New York law
firm until December 31, 1995 (having been affiliated with such firm since August
1983). Mr. Mandracchia is the brother-in-law of Kevin J. Zugibe.

                          COMMUNICATIONS WITH THE BOARD

      The Board of Directors has established a process for  shareholders to send
communications to the Board of Directors.  Shareholders may communicate with the
Board of  Directors  individually  or as a group by  writing  to:  The  Board of
Directors  of Hudson  Technologies,  Inc.  c/o  Corporate  Secretary,  275 North
Middletown  Road,  Pearl River,  NY 10965.  Shareholders  should  identify their
communication  as  being  from a  shareholder  of  the  Company.  The  Corporate
Secretary  may  require  reasonable  evidence  that the  communication  or other
submission  is made by a  shareholder  of the Company  before  transmitting  the
communication to the Board of Directors.


                 BOARD ATTENDANCE AT ANNUAL SHAREHOLDER MEETINGS

      The Company has a policy that strongly encourages  directors to attend the
Company's  Annual  Meeting  of  Shareholders.  Last  year's  Annual  Meeting  of
Shareholders was attended by six of the Company's directors.

                       CONSIDERATION OF DIRECTOR NOMINEES

      Shareholders  of the Company wishing to recommend  director  candidates to
the Board must  submit  their  recommendations  in  writing  to the  Board,  c/o
Corporate Secretary, Hudson Technologies, Inc., 275 North Middletown Road, Pearl
River, NY 10965.

      The Board will consider nominees recommended by the Company's shareholders
provided that the recommendation  contains sufficient  information for the Board
to  assess  the   suitability  of  the  candidate,   including  the  candidate's
qualifications.  Candidates  recommended by shareholders  that comply with these
procedures will receive the same  consideration  that candidates  recommended by
the  Board  receive.  The  recommendations  must  also  state  the  name  of the
shareholder who is submitting the recommendation.  In addition,  it must include
information  regarding the recommended  candidate relevant to a determination of
whether  the  recommended  candidate  would  be  barred  from  being  considered
independent  under NASD  Marketplace Rule 4200, or,  alternatively,  a statement
that the recommended  candidate would not be so barred.  Each nomination is also
required to set forth:  (i) a  representation  that the  shareholder  making the
nomination is a holder of record of capital stock of the Company entitled


                                      -7-


to vote at such  meeting  and  intends  to  appear  in person or by proxy at the
meeting to vote for the person or persons  nominated;  (ii) a description of all
arrangements and understandings between the shareholder and each nominee and any
other person or persons  (naming  such person or persons)  pursuant to which the
nomination was made by the shareholder;  (iii) such other information  regarding
each nominee proposed by such shareholder as would be required to be included in
a proxy  statement  filed pursuant to the proxy rules of the SEC had the nominee
been  nominated by the Board of Directors;  and (iv) the consent of each nominee
to serve as a director of the Company if so elected. A nomination which does not
comply  with the above  requirements  or that is not  received  by the  deadline
referred to below will not be considered.

      The qualities and skills  sought in  prospective  members of the Board are
determined by the Board. The Board generally  requires that director  candidates
be qualified  individuals  who, if added to the Board,  would provide the mix of
director  characteristics,  experience,  perspectives and skills appropriate for
the Company.  Criteria for  selection of  candidates  will  include,  but not be
limited to: (i) business and financial acumen, as determined by the Board in its
discretion,  (ii)  qualities  reflecting a proven record of  accomplishment  and
ability to work with others,  (iii)  knowledge of the Company's  industry,  (iv)
relevant  experience and knowledge of corporate  governance  practices,  and (v)
expertise  in an area  relevant to the  Company.  Such  persons  should not have
commitments  that would conflict with the time  commitments of a Director of the
Company.

            DEADLINE AND PROCEDURES FOR SUBMITTING BOARD NOMINATIONS

      A shareholder wishing to nominate a candidate for election to the Board at
the  Annual  Meeting  of  Shareholders  to be held in 2006 is  required  to give
written notice containing the required information  specified above addressed to
the Board, c/o Secretary of the Company,  Hudson  Technologies,  Inc., 275 North
Middletown  Road,  Pearl River,  NY 10965 of his or her intention to make such a
nomination.  The notice of nomination  and other  required  information  must be
received  by the  Company's  Secretary  no later than the latest date upon which
shareholder  proposals  must be  submitted  to the Company for  inclusion in the
Company's proxy statement  relating to such meeting pursuant to Rule 14a-8 under
the Securities  Exchange Act of 1934, as amended (the "Exchange  Act") (i.e., by
February 3, 2006), or other  applicable  rules or regulations  under the federal
securities  laws or, if no such rules apply,  at least 90 days prior to the date
one  year  from  the  date  of  the  immediately  preceding  Annual  Meeting  of
Shareholders.

      With respect to the deadlines  discussed  above, if the date of the Annual
Meeting of  Shareholders to be held in 2006 is advanced by more than thirty days
or delayed (other than as a result of adjournment) by more than thirty days from
the  anniversary of the Annual  Meeting held in 2005, a shareholder  must submit
any such  proposal  to the  Company no later than the close of  business  on the
sixtieth day prior to the date of the 2006 Annual Meeting.

Section 16(a) Compliance

      Section  16(a) of the Exchange Act  requires  the  Company's  officers and
directors  and  persons  who own  more  than  10% of a  registered  class of the
Company's equity securities to


                                      -8-


file reports of ownership and changes in ownership  ("Reporting  Persons")  with
the  Securities  and  Exchange  Commission  (the "SEC").  Reporting  Persons are
required by SEC  regulations  to furnish the Company  with copies of all Section
16(a) forms they file.

      Based solely on the Company's  review of the copies of such forms received
by the Company,  the Company  believes  that during the year ended  December 31,
2004 all filing requirements applicable to its officers,  directors, and greater
than 10 percent beneficial shareholders were complied with.

                             EXECUTIVE COMPENSATION

      The following table discloses,  for the years indicated,  the compensation
for the Company's Chief Executive Officer and each executive officer that earned
over $100,000 during the year ended December 31, 2004 (the "Named Executives").

                           Summary Compensation Table



                                                                                                        Long Term
                                                                                                       Compensation
                                                                     Annual Compensation (1)              Awards
                                                               ---------------------------------  Securities Underlying
            Name                         Position              Year         Salary         Bonus        Options #
            ----                         --------              ----         ------         -----        ---------

                                                                                                  
Kevin J. Zugibe (2)            Chairman of the Board          2004        $146,230    $62,750(3)      331,250 shares
                               and Chief Executive            2003        $145,136            --      123,000 shares
                               Officer                        2002        $ 97,471            --       45,000 shares

Brian F.  Coleman              President and Chief            2004        $138,799    $48,000(3)      118,750 shares
                               Operating Officer              2003        $138,799            --       79,500 shares
                                                              2002        $138,799            --            --

James R. Buscemi               Chief Financial Officer        2004        $108,800    $18,450(3)       46,875 shares
                                                              2003        $108,593            --       15,000 shares
                                                              2002        $ 96,304            --       10,000 shares

Charles F. Harkins, Jr.        Vice President Sales           2004        $136,800    $53,450(3)       57,813 shares
                                                              2003        $133,031       $10,000       85,000 shares
                                                              2002        $110,079       $29,976            --

Stephen P. Mandracchia         Vice President Legal and       2004        $123,800    $33,450(3)       61,875 shares
                               Regulatory and Secretary       2003        $123,800            --       60,000 shares
                                                              2002        $123,800            --            --


----------
(1)   The value of personal  benefits  furnished to the Named Executives  during
      2002,  2003  and  2004  did not  exceed  10% of  their  respective  annual
      compensation.

(2)   A certain  portion  of Mr.  Zugibe's  compensation  has been paid in stock
      option awards rather than cash.  As a result,  options to purchase  15,000
      and 45,000  shares of common  stock for the years ended  December 31, 2003
      and 2002 respectively, were issued in lieu of cash compensation.

(3)   Bonus was earned in 2004 and was paid during the first and second quarters
      of 2005.


                                      -9-


Summary of Stock Options Granted to Named Executive Officers

The Company granted options,  which,  except as otherwise set forth below,  vest
upon the date of grant,  to the Named  Executives  during the fiscal  year ended
December 31, 2004, as shown in the following table:

                      Option Grants in the 2004 Fiscal Year
                      -------------------------------------



                                                                                 % of Total
                                                                  Number of       Options
                                                                 Securities      Granted to
                                                                 Underlying      Employees in
                                                                   Options         Fiscal         Exercise or       Expiration
      Name                         Position                        Granted          Year        Base price($/sh)       Date
      ----                         --------                        -------          ----        ----------------       ----

                                                                                                     
Kevin J. Zugibe               Chairman of the Board              100,000  (1)      12.3%             $1.13          03/05/2014
                              and Chief Executive                 18,750  (2)       2.3%             $1.15          03/31/2014
                              Officer                            175,000           21.6%             $1.15          03/31/2014
                                                                  18,750  (3)       2.3%             $0.83          09/17/2014
                                                                  18,750  (4)       2.3%             $0.95          10/01/2014

Brian F. Coleman              President and Chief                 75,000  (1)       9.3%             $1.13          03/05/2014
                              Operating Officer                   12,500  (2)       1.5%             $1.15          03/31/2014
                                                                   6,250            0.8%             $1.15          03/31/2014
                                                                  12,500  (3)       1.5%             $0.83          09/17/2014
                                                                  12,500  (4)       1.5%             $0.95          10/01/2014

James R. Buscemi              Chief Financial Officer             25,000  (1)       3.1%             $1.13          03/05/2014
                                                                   6,250  (2)       0.8%             $1.15          03/31/2014
                                                                   3,125            0.4%             $1.15          03/31/2014
                                                                   6,250  (3)       0.8%             $0.83          09/17/2014
                                                                   6,250  (4)       0.8%             $0.95          10/01/2014

Charles F. Harkins, Jr.       Vice President Sales                25,000  (1)       3.1%             $1.13          03/05/2014
                                                                   9,375  (2)       1.2%             $1.15          03/31/2014
                                                                   4,688            0.6%             $1.15          03/31/2014
                                                                   9,375  (3)       1.2%             $0.83          09/17/2014
                                                                   9,375  (4)       1.2%             $0.95          10/01/2014

Stephen P. Mandracchia        Vice President Legal and            40,000  (1)       4.9%             $1.13          03/05/2014
                              Regulatory and Secretary             6,250  (2)       0.8%             $1.15          03/31/2014
                                                                   3,125            0.4%             $1.15          03/31/2014
                                                                   6,250  (3)       0.8%             $0.83          09/17/2014
                                                                   6,250  (4)       0.8%             $0.95          10/01/2014


----------
(1)   The underlying options vest quarterly commencing April 1, 2004.
(2)   The underlying options vest quarterly commencing July 1, 2004.
(3)   The underlying options vest quarterly commencing October 1, 2004.
(4)   The underlying options vest quarterly commencing January 1, 2005.


                                      -10-


Aggregated Fiscal Year End Option Values

      The  following  table  sets  forth  information  concerning  the  value of
unexercised  stock options held by the Named Executives at December 31, 2004. No
options  were  exercised  by the Named  Executives  during the fiscal year ended
December 31, 2004.

                  Aggregated 2004 Fiscal Year End Option Values



                                                                       Number of Securities
                                                                            Underlying               Value of Unexercised
                                                                        Unexercised Options          In-the-money Options
                                   Shares                              At December 31, 2004         At December 31, 2004(1)
                                Acquired on                            --------------------         -----------------------
          Name                   Exercise      Value Realized    Exercisable    Unexercisable   Exercisable    Unexercisable
          ----                   --------      --------------    -----------    -------------   -----------    -------------
                                                                                                
Kevin J. Zugibe
Chairman and                      110,500          $6,780          600,311         98,439          $4,689         $14,061
Chief Executive Officer

Brian F. Coleman
President and Chief                  --              --            265,438         70,312          $3,124          $9,376
Operating Officer

James R. Buscemi                     --              --             51,433         28,442          $1,560          $4,690
Chief Financial Officer

Charles F. Harkins, Jr.              --              --            176,714         36,099          $2,342          $7,033
Vice President Sales

Stephen P. Mandracchia
Vice President Legal and             --              --            176,605         36,570          $1,560          $4,690
Regulatory And Secretary


----------
(1) Year-end values of unexercised  in-the-money  options represent the positive
spread between the exercise price of such options and the year-end  market value
of the Common Stock of $.90.

Employment Agreement

            The Company has entered into a two-year  employment  agreement  with
Kevin J. Zugibe,  which expires in May 2007 and is  automatically  renewable for
two successive terms. Pursuant to the agreement, effective February 1, 2000, Mr.
Zugibe is receiving an annual base salary of $141,000  with such  increases  and
bonuses as the Board may determine.  During 2002, the Board of Directors and Mr.
Zugibe agreed,  at Mr.  Zugibe's  option,  to reduce the cash  compensation  and
issued,  during 2002 and 2003, and aggregate of 60,000  additional stock options
to Mr.  Zugibe in  satisfaction  of his annual base salary.  Effective  April 1,
2005,  Mr.  Zugibe's  annual  base  salary  is  $170,000.  The  Company  is  the
beneficiary  of a "key-man"  insurance  policy on the life of Mr.  Zugibe in the
amount of $1,000,000.


                                      -11-


            In December 2004, the Board of Directors  approved a bonus plan (the
"2005 Bonus Plan") that provides for the award of the following:

      1.    The Company  will issue  stock  options  under one of the  Company's
            existing  stock option plans to purchase:  (i) 75,000  shares of its
            common  stock to Kevin J. Zugibe,  (ii) 50,000  shares of its common
            stock to Brian F.  Coleman,  (iii) 37,500 shares of its common stock
            to Charles F.  Harkins,  (iv) 25,000  shares of its common  stock to
            Stephen P. Mandracchia, and (v) 25,000 shares of its common stock to
            James R. Buscemi. All such stock options will be issued quarterly in
            four equal installments,  with the first quarterly installment to be
            issued on April 1, 2005 and the  final  installment  to be issued on
            January 2, 2006.  Such stock  options  will be issued at an exercise
            price equal to the closing sale price of the Company's  common stock
            on the issuance date for each installment, and each installment will
            vest in eight equal  quarterly  installments  over a two year period
            with each  installment  vesting  on the first day of the  succeeding
            quarter  (e.g.,  Options issued on April 1, 2005 will vest quarterly
            commencing  July 1,  2005),  and will expire ten (10) years from the
            date  of  issuance,   subject  to  earlier  termination  in  certain
            circumstances.

      2.    The Company  will  establish  at the end of fiscal year 2005 a bonus
            pool for the payment of cash bonuses to some or all of the following
            persons:  Kevin J. Zugibe,  Brian F.  Coleman,  Charles F.  Harkins,
            Stephen  P.  Mandracchia  and James R.  Buscemi  (collectively,  the
            "Executive Officers"),  as well as to several other key employees of
            the Company.  The amount of the bonus pool to be established has not
            been  determined,  but will be  based  upon  the  Company  achieving
            earnings  for the  fiscal  year 2005 in  excess of a  pre-determined
            level for fiscal 2005 (the "Benchmark"),  up to a maximum bonus pool
            of $250,000.  In the event the Company's  2005  earnings  exceed the
            Benchmark, cash bonuses may be paid out of the bonus pool to some or
            all of the Executive Officers. The Board of Directors will determine
            which,  if any,  of the  Executive  Officers  are to  receive a cash
            bonus,  as well as the  amount of the cash  bonus to be paid to each
            such Executive  Officer,  which  determination  will be made, in the
            discretion  of the Board of  Directors,  based upon the overall 2005
            financial  results  of  the  Company  as  well  as on  the  personal
            performance of each Executive Officer during 2005.

            In  addition  to the  foregoing,  in the  event the  Company's  2005
earnings  exceed the Benchmark,  on January 2, 2006 the Company will issue stock
options (the "Benchmark Options") to some or all of the Executive Officers.  The
Board of Directors will determine  which, if any, of the Executive  Officers are
to receive Benchmark  Options,  as well as the number of Benchmark Options to be
issued to each such Executive Officer,  which determination will be made, in the
discretion  of the Board of  Directors,  based upon the overall  2005  financial
results of the Company as well as on the personal  performance of each Executive
Officer during 2005. The maximum number of Benchmark  Options to be issued under
the Company's  Stock Option Plans will be for the purchase of: (i) 75,000 shares
of its common stock to Kevin J. Zugibe,  (ii) 50,000  shares of its common stock
to Brian F.  Coleman,  (iii)  37,500  shares of its  common  stock to Charles F.
Harkins,  (iv) 25,000 shares of its common stock to Stephen P. Mandracchia,  and
(v) 25,000  shares of its common stock to James R. Buscemi.  All such  Benchmark
Options  will be issued at an exercise  price equal to the closing sale price of
the Company's  common stock on


                                      -12-


the issuance date, and will vest in eight equal  quarterly  installments  over a
two year period with the first  installment  vesting on April 3, 2006 and expire
on January 2, 2016, subject to earlier termination in certain circumstances.

Stock Option Plans

      Hudson  has  adopted  each of an  Employee  Stock  Option  Plan (the "1994
Plan"),  the 1997  Stock  Option  Plan (the  "1997  Plan"),  and the 2004  Stock
Incentive  Plan (the "2004  Plan")  pursuant to which an  aggregate of 4,916,102
shares of common stock are currently  reserved for issuance upon the exercise of
options designated as either (i) options intended to constitute  incentive stock
options  ("ISOs")  under the  Internal  Revenue Code of 1986,  as amended,  (ii)
nonqualified  options or (iii),  in the case of the 2004 Plan, for issuance upon
the granting of restricted stock,  deferred stock or other  stock-based  awards.
ISOs may be granted  under  either of the 1994  Plan,  1997 Plan or 2004 Plan to
employees  and  officers  of  Hudson.  Non-qualified  options  may be granted to
consultants,  directors  (whether  or not  they  are  employees),  employees  or
officers of Hudson.  Stock appreciation rights may also be issued in tandem with
stock options.

      Each of the 1994  Plan,  the 1997  Plan and the 2004 Plan is  intended  to
qualify  under Rule 16b-3  under the  Exchange  Act and is  administered  by the
Compensation/Stock  Option  Committee of the Board of Directors.  The Committee,
within  the  limitations  of each of the 1994  Plan,  the 1997 Plan and the 2004
Plan, determines the persons to whom awards, including options, will be granted,
the number of shares to be covered by each  award,  and if the award is options,
whether the options  granted are  intended to be ISOs,  the duration and rate of
exercise of each option, the exercise price per share and the manner of exercise
and the time,  manner and form of payment upon  exercise of an option.  The 1994
Plan expired  December 31, 2004.  Unless sooner  terminated,  the 1997 Plan will
expire on June 11, 2007, and the 2004 Plan will expire on September 10, 2015.

      ISOs granted under either of the 1997 Plan or 2004 Plan may not be granted
at a price less than the fair  market  value of the common  stock on the date of
grant (or 110% of fair market  value in the case of persons  holding 10% or more
of the voting stock of Hudson).  The  aggregate  fair market value of shares for
which ISOs granted to any employee  are  exercisable  for the first time by such
employee  during any calendar  year (under all stock option plans of Hudson) may
not exceed $100,000.  Non-qualified  options granted under the 1997 Plan may not
be granted  at a price less than the par value of  Hudson's  common  stock,  and
non-qualified  options  under the 2004 Plan may not be  granted  at a price less
than the fair  market  value of the common  stock on the date of grant.  Options
granted  under the 1994 Plan,  1997 Plan and the 2004 Plan will  expire not more
than ten years from the date of grant (five years in the case of ISOs granted to
persons holding 10% or more of the voting stock of Hudson).  Except as otherwise
provided by the committee  with respect to  non-qualified  options,  all options
granted  under  the  1994  Plan,  the  1997  Plan  and  the  2004  Plan  are not
transferable during an optionee's lifetime but are transferable at death by will
or by the laws of descent and  distribution.  In general,  upon  termination  of
employment  of an  optionee,  all options  granted to such person  which are not
exercisable  on the  date of such  termination  immediately  terminate,  and any
options  that  are  exercisable  terminate  90  days  following  termination  of
employment.


                                      -13-


      As of December 31, 2004,  the Company had options  outstanding to purchase
536,202 shares of Common Stock under the 1994 Plan. As of December 31, 2004, the
Company had options  outstanding  to purchase  1,750,688  shares of Common Stock
under the 1997 Plan and  129,312  shares  reserved  under the 1997  Plan.  As of
December 31, 2004, the Company has not made any awards under the 2004 Plan.

Compensation of Directors

            Non-employee  directors  receive an annual fee of $4,000 and receive
reimbursement for out-of-pocket  expenses incurred for attendance at meetings of
the Board of Directors and Board committee  meetings.  In addition  non-employee
directors  receive 10,000  nonqualified  stock options per year of service under
the Company's Stock Option Plans.

            In addition to the  standard  annual  director's  remuneration,  Mr.
Schell  receives $2,500 and 10,000 stock options for serving as a director and a
consultant  to the  Company.  The  additional  stock  options are issued with an
exercise price equal to that of the other directors' option grants.

            In 2004, the Company granted to Harry C. Schell nonqualified options
to purchase  30,000 shares of Common Stock at exercise  prices ranging from $.95
to $1.13 per share. In addition, in 2004, the Company granted to each of Dominic
J. Monetta,  Otto C. Morch and Vincent P.  Abbatecola,  nonqualified  options to
purchase  15,000 shares of Common Stock at exercise  prices ranging from $.95 to
$1.13 per share.  In connection with the appointment of two of their nominees as
members of the Board of  Directors,  in 2004 the  Company  granted to Fleming US
Discovery  Fund III,  L.P.  and Fleming US  Discovery  Offshore  Fund III,  L.P.
nonqualified  options to purchase  8,618 and 1,382  shares of Common Stock at an
exercise  price of $1.13  per  share.  All such  options  are  vested  and fully
exercisable at December 31, 2004.


                                      -14-


         SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

The  following  table sets  forth  information  as of the  Record  Date based on
information  obtained  from  the  persons  named  below,  with  respect  to  the
beneficial ownership of Hudson's common stock by (i) each person known by Hudson
to be the beneficial owner of more than 5% of Hudson's outstanding common stock,
(ii) the Named Executives, (iii) each director of Hudson, and (iv) all directors
and executive officers of Hudson as a group:



                                                          Amount and
                                                           Nature of               Percentage of
                                                          Beneficial              Common Shares
     Name and Address of Beneficial Owner (1)            Ownership (2)                 Owned
     ----------------------------------------            -------------            --------------
                                                                                  
     Kevin J. Zugibe                                           986,036   (3)           3.8%
     Brian F. Coleman                                          320,195   (4)           1.2%
     James R. Buscemi                                           71,680   (5)             *
     Charles F. Harkins, Jr.                                   198,912   (6)             *
     Stephen P. Mandracchia                                    537,012   (7)           2.1%
     Vincent P. Abbatecola                                      49,409   (8)             *
     Robert L. Burr                                                 --   (10)            *
     Dominic J. Monetta                                         66,136   (8)             *
     Otto C. Morch                                              35,009   (9)             *
     Harry C. Schell                                           110,000   (11)            *
     Robert M. Zech                                              5,000   (12)            *
     Flemings Funds                                         19,290,242   (13)          75.1%
     All directors and executive officers as a group         2,379,389   (14)          8.8%
     (11 persons)


* = Less than 1%

----------
(1) Unless otherwise indicated,  the address of each of the persons listed above
is the address of the Company,  275 North Middletown Road, Pearl River, New York
10965.

(2) A person is  deemed to be the  beneficial  owner of  securities  that can be
acquired by such person within 60 days from Record Date. Each beneficial owner's
percentage  ownership is  determined  by assuming that options and warrants that
are held by such  person  (but not  held by any  other  person)  and  which  are
exercisable  within  60 days  from  Record  Date  have  been  exercised.  Unless
otherwise  noted,  the Company believes that all persons named in the table have
sole  voting and  investment  power with  respect to all shares of Common  Stock
beneficially owned by them.

(3) Includes (i) 245,000 shares which may be purchased at $2.375 per share; (ii)
65,000  shares which may be purchased at $2.551 per share;  (iii) 15,000  shares
which may be  purchased  at $2.50 per share;  (iv)  15,000  shares  which may be
purchased at $1.90 per share;  (v) 15,000 shares which may be purchased at $1.40
per share;  (vi) 25,000 shares which may be purchased at $1.14 per share;  (vii)
50,000 shares which may be purchased at $1.13 per share;  (viii)  184,372 shares
which may be  purchased  at $1.15 per  share;  (ix)  7,032  shares  which may be
purchased at $.83 per share; (x) 4,686 shares which may be purchased at $.95 per
share;  and (xi) 11,718  shares which may be purchased at $1.02 per share shares
under immediately exercisable options.


                                      -15-


(4) Includes (i) 37,500 shares which may be purchased at $2.375 per share;  (ii)
100,000  shares which may be purchased at $2.551 per share;  (iii) 79,500 shares
which may be  purchased  at $1.14 per share;  (iv)  46,875  shares  which may be
purchased at $1.13 per share;  (v) 12,498 shares which may be purchased at $1.15
per share;  (vi) 4,686 shares  which may be  purchased at $.83 per share;  (vii)
3,124 shares  which may be purchased at $.95 per share;  and (viii) 7,812 shares
which may be purchased at $1.02 per share under immediately exercisable options.
Also includes  1,926 Common Stock  purchase  warrants with an exercise  price of
$.87 per share.

(5) Includes  (i) 8,000 shares which may be purchased at $2.375 per share;  (ii)
10,000  shares which may be purchased  at $1.30 per share;  (iii) 15,000  shares
which may be  purchased  at $1.14 per share;  (iv)  15,625  shares  which may be
purchased  at $1.13 per share;  (v) 6,249 shares which may be purchased at $1.15
per share;  (vi) 2,340 shares  which may be  purchased at $.83 per share;  (vii)
1,560 shares  which may be purchased at $.95 per share;  and (viii) 3,906 shares
which may be purchased at $1.02 per share under immediately exercisable options.

(6) Includes (i) 55,000 shares which may be purchased at $2.375 per share;  (ii)
5,000  shares which may be  purchased  at $2.53 per share;  (iii) 10,000  shares
which may be  purchased  at $2.55 per share;  (iv)  50,000  shares  which may be
purchased at $1.10 per share (v) 35,000  shares which may be purchased at $1.14;
(vi) 15,625 shares which may be purchased at $1.13 per share; (vii) 9,372 shares
which may be  purchased  at $1.15 per share;  (viii)  3,513  shares which may be
purchased  at $.83 per share;  (ix) 2,342  shares which may be purchased at $.95
per share;  and (x) 5,860 shares which may be purchased at $1.02 per share under
immediately exercisable options.

(7) Includes (i) 76,300 shares which may be purchased at $2.375 per share;  (ii)
15,000  shares which may be purchased at $2.551 per share;  (iii) 60,000  shares
which may be  purchased  at $1.14  per share  (iv)  25,000  shares  which may be
purchased  at $1.13 per share;  (v) 6,145 shares which may be purchased at $1.15
per share;  (vi) 2,340 shares  which may be  purchased at $.83 per share;  (vii)
1,560 shares  which may be purchased at $.95 per share;  and (viii) 3,906 shares
which may be purchased at $1.02 per share under immediately exercisable options.
Also includes  6,420 Common Stock  purchase  warrants with an exercise  price of
$.89 per share.

(8) Includes  (i) 5,000  shares which may be purchased at $2.78 per share;  (ii)
5,000 shares which may be purchased at $3.08 per share; (iii) 5,000 shares which
may be  purchased  at $1.13  per  share;  and (iv)  10,000  shares  which may be
purchased at $1.00 per share under immediately exercisable options.

(9) Includes  (i) 5,000  shares which may be purchased at $2.78 per share;  (ii)
5,000 shares which may be purchased at $3.08 per share; (iii) 5,000 shares which
may be purchased at $.85 per share;  (iv) 5,000 shares which may be purchased at
$1.13 per share;  and (v) 10,000 shares which may be purchased at $.95 per share
under immediately exercisable options.

(10) Mr. Burr's share ownership excludes all shares of Common Stock beneficially
owned by the Flemings Funds (as defined in footnote 13 below).


                                      -16-


(11) Includes (i) 10,000 shares which may be purchased at $2.78 per share;  (ii)
10,000  shares which may be purchased  at $3.08 per share;  (iii) 10,000  shares
which may be  purchased  at $.85 per  share;  (iv)  10,000  shares  which may be
purchased  at $1.13 per share and (v) 20,000  shares  which may be  purchased at
$.95 per share under immediately exercisable options.

(12)  Includes  5,000  shares  which may be  purchased  at $.85 per share  under
immediately  exercisable options. Mr. Zech's share ownership excludes all shares
of Common Stock beneficially owned by the Flemings Funds.

(13) Fleming US Discovery Fund III, L.P. and Fleming US Discovery  Offshore Fund
III, L.P., and their general partner,  Fleming US Discovery  Partners,  L.P. and
its general partner, Fleming US Discovery Partners LLC, collectively referred to
as ("Flemings  Funds") are  affiliates.  Includes (i) 10,000 shares which may be
purchased at $2.78 per share; (ii) 10,000 shares which may be purchased at $3.08
per share;  (iii) 5,000 shares which may be purchased at $.85 per share and (iv)
10,000  shares  which may be  purchased  at $1.13 per  share  under  immediately
exercisable options. Also includes 51,358 Common Stock purchase warrants with an
exercise price of $.87 per share, and 66,435 Common Stock purchase warrants with
an exercise  price of $1.21 per share.  Flemings  Funds address is c/o JP Morgan
Chase & Co., 1221 Avenue of the Americas,  39th Floor, New York, New York 10020,
except for Fleming US Discovery  Offshore  Fund III,  L.P.  whose address is c/o
Bank of Bermuda LTD., 6 Front Street, Hamilton HM11 Bermuda.

(14) Includes  exercisable options to purchase 1,519,546 shares of Common Stock,
and Common Stock  purchase  warrants to purchase  8,346 shares of Common  Stock,
owned by the  directors  and  officers as a group.  Excludes  19,290,242  shares
beneficially owned by the Flemings Funds.

                    INDEPENDENT REGISTERED PUBLIC ACCOUNTANTS

      BDO Seidman, LLP has audited and reported upon the consolidated  financial
statements  of the Company  for Fiscal  2004 and has been  selected by the Audit
Committee  of the Board of  Directors  to examine and report upon the  financial
statements  of the  Company  for the fiscal year ending  December  31,  2005.  A
representative  of BDO  Seidman,  LLP is  expected  to be  present at the Annual
Meeting with the  opportunity  to make a statement if he or she desires to do so
and is expected to be available to respond to appropriate questions.

      In addition to retaining BDO Seidman, LLP to audit the Company's financial
statements,  the  Company  has  engaged  BDO  Seidman,  LLP from time to time to
perform other  services.  The following  sets forth the aggregate fees billed by
BDO Seidman,  LLP to the Company in connection with services rendered during the
fiscal years ended December 31, 2003 and Fiscal 2004.

      Audit Fees. The aggregate fees billed by BDO Seidman, LLP for professional
services rendered for the audit of the Company's annual financial statements for
the years  ended  December  31,  2004 and  2003,  the  review  of the  financial
statements included in the Company's


                                      -17-


Forms 10-QSB and consents  issued in connection  with the  Company's  filings on
Form SB-2 for 2004 and 2003 totaled $103,000 and $142,000, respectively.

      Audit-Related  Fees.  The  aggregate  fees billed by BDO Seidman,  LLP for
assurance and related services that are reasonably related to the performance of
the audit or review of the Company's financial  statements,  for the years ended
December  31, 2004 and 2003,  and are not  disclosed in the  paragraph  captions
"Audit Fees" above, were none and none, respectively.

      Tax Fees. The aggregate fees billed by BDO Seidman,  LLP for  professional
services rendered for tax compliance,  for the years ended December 31, 2004 and
2003,  were  none and  none,  respectively.  The  aggregate  fees  billed by BDO
Seidman, LLP for professional services rendered for tax advice and tax planning,
for  the  years  ended  December  31,  2004  and  2002,   were  none  and  none,
respectively.

      All Other Fees. The aggregate fees billed by BDO Seidman, LLP for products
and  services,  other than the  services  described in the  paragraphs  captions
"Audit  Fees",  "Audit-Related  Fees",  and "Tax Fees" above for the years ended
December 31, 2004 and 2003, were none and none, respectively.

      The  Audit  Committee  has  established  its  pre-approval   policies  and
procedures,  pursuant to which the Audit Committee  approved the foregoing audit
services  provided  by BDO  Seidman,  LLP in 2004.  Consistent  with  the  Audit
Committee's  responsibility for engaging the Company's independent auditors, all
audit  and  permitted  non-audit  services  require  pre-approval  by the  Audit
Committee. The full Audit Committee approves proposed services and fee estimates
for these services.  The Audit Committee  chairperson or their designee has been
designated  by the Audit  Committee to approve any services  arising  during the
year that were not pre-approved by the Audit Committee. Services approved by the
Audit Committee  chairperson are communicated to the full Audit Committee at its
next regular meeting and the Audit Committee  reviews  services and fees for the
fiscal  year at each  such  meeting.  Pursuant  to these  procedures,  the Audit
Committee approved the foregoing audit services provided by BDO Seidman, LLP.

                              SHAREHOLDER PROPOSALS

      Shareholders who wish to present  proposals  appropriate for consideration
at the next Annual  Meeting of  Shareholders  must submit the proposal in proper
form, and in  satisfaction  of the conditions  established by the Securities and
Exchange  Commission,  to the Company at its address set forth on the first page
of this proxy  statement not later than  February 3, 2006 to be  considered  for
inclusion in the Company's  proxy  statement and form of proxy  relating to such
annual meeting.  Any such proposals,  as well as any questions  related thereto,
should be directed to the Secretary of the Company.

      After the February 3, 2006 deadline,  a shareholder may present a proposal
at the  Company's  next  Annual  Meeting  if it is  submitted  to the  Company's
Secretary at the address set forth above no later than April 22, 2006. If timely
submitted, the shareholder may present the


                                      -18-


proposal at the next Annual  Meeting but the Company is not obligated to include
the proposal in its proxy statement.

                                OTHER INFORMATION

      Proxies  for the Annual  Meeting  will be  solicited  by mail and  through
brokerage  institutions  and  all  expenses  involved,  including  printing  and
postage, will be paid by the Company.

      A COPY OF THE  COMPANY'S  ANNUAL  REPORT ON FORM 10-KSB FOR THE YEAR ENDED
DECEMBER 31, 2004 IS BEING FURNISHED  HEREWITH TO EACH  SHAREHOLDER OF RECORD AS
OF THE CLOSE OF BUSINESS ON THE RECORD DATE.

      COPIES OF EXHIBITS  TO SUCH ANNUAL  REPORT ON FORM 10-KSB WILL BE PROVIDED
FOR A NOMINAL CHARGE TO  SHAREHOLDERS  WHO MAKE A WRITTEN REQUEST TO THE COMPANY
AT THE FOLLOWING ADDRESS:

HUDSON TECHNOLOGIES, INC.
275 NORTH MIDDLETOWN ROAD
PEARL RIVER, NEW YORK 10965
ATTENTION: Stephen P. Mandracchia, Secretary

      The Board is not aware of any other matters,  except for those incident to
the conduct of the Annual Meeting,  that are to be presented to shareholders for
formal action at the Annual  Meeting.  If, however,  any other matters  properly
come before the Annual Meeting or any adjournments  thereof, it is the intention
of the  persons  named in the proxy  included  herewith  to vote  such  proxy in
accordance with their judgment.

                                         By order of the Board
                                         of Directors

                                         /s/ Kevin J. Zugibe

                                         Kevin J. Zugibe, P.E.
                                         Chairman of the Board

June 3, 2005


                                      -19-


                  FOLD AND DETACH HERE AND READ THE REVERSE SIDE
--------------------------------------------------------------------------------

THIS PROXY WILL BE VOTED IN ACCORDANCE WITH THE INSTRUCTIONS 
Please mark
GIVEN BELOW. IF NO INSTRUCTIONS ARE GIVEN, THIS PROXY WILL           your votes
BE VOTED FOR THOSE NOMINEES AND THE PROPOSALS LISTED BELOW.          like this
                                                                          [X]

1. Election of directors:        FOR all nominees,      WITHHOLD AUTHORITY
                                     listed to               to vote for
    Vincent P. Abbatecola         the left (except          all nominees
    Robert L. Burr                  as marked to              listed to
    Otto C. Morch               the contrary below).         the left.
                                        [_]                      [_]

(INSTRUCTION:  To withhold authority to vote for any individual 
nominee,  write
that nominee's name in the space below.)

________________________________________________________________________________

2. In their  discretion,  the  Proxies  are  authorized  to vote upon 
such other
    business as may properly come before the meeting.

Please  sign  exactly  as name  appears  hereon.  When  shares are 
held by joint
tenants,  both should sign. When signing as attorney,  executor, 
administrator,
trustee or guardian,  please give full title as such. If a 
corporation,  please
sign in full  corporate  name by President  or other  authorized 
officer.  If a
partnership, please sign in partnership name by authorized person.

                                    COMPANY ID:

                                   PROXY NUMBER:

                                  ACCOUNT NUMBER:

Signature______________________Signature______________________Date:_______, 
2005

Please mark,  sign,  date and return this proxy card promptly using 
the enclosed
envelope.



                  FOLD AND DETACH HERE AND READ THE REVERSE SIDE
--------------------------------------------------------------------------------

                            HUDSON TECHNOLOGIES, INC.
                            275 North Middletown Road
                           Pearl River, New York 10965

        PROXY FOR ANNUAL MEETING OF SHAREHOLDERS TO BE HELD JUNE 28, 2005
           THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS

       The   undersigned   hereby   appoints  KEVIN  J.  ZUGIBE  and 
STEPHEN  P.
MANDRACCHIA,  and each of them, Proxies, with full power of 
substitution in each
of them, in the name, place and stead of the undersigned,  to vote at 
the Annual
Meeting of Shareholders of Hudson Technologies, Inc. (the "Company") 
on Tuesday,
June 28, 2005, at the Holiday Inn Suffern, 3 Executive Blvd., 
Suffern, New York
10901 or at any adjournment or adjournments thereof,  according to 
the number of
votes that the undersigned would be entitled to vote if personally 
present, upon
the following matters:

                   (Continued and to be signed on reverse side)