EXHIBIT H

FORM OF ALLONGE

ALLONGE TO AMENDED AND RESTATED REVOLVING  NOTE

ENDORSEMENT SEPARATE FROM INSTRUMENT

|Maker:                     |  | Hudson Technologies Company  
|-------------------------- |  | -----------------------------
|Payee:                     |  | Keltic Financial Partners, LP
|Date of Note:              |  | June ___, 2007               
|Original Principal Amount: |  | $10,000,000                  



This Allonge shall be and remain attached to and shall constitute an integral part of the above-described Amended and Restated Revolving Note (the "Note") from and after the date hereof.

Effective as of the date hereof,  the principal amount of the Note is hereby increased by $_________ to $_______________, and all references to the term "$___________" (whether written or numerical) in the Note are hereby replaced with the term "$______________".

Except as expressly amended by this Allonge, the provisions of the Note shall remain in full force and effect and are hereby ratified and confirmed by the undersigned including, without limitation, the confession of judgment provisions thereof.

IN WITNESS WHEREOF, the undersigned, intending to be legally bound, has caused this Allonge to be executed by its duly authorized officer as of the   day of __________, 200__.

HUDSON TECHNOLOGIES COMPANY

By:_________________________________

Name:	Brian F. Coleman

Title:	President and Chief Operating Officer



Acknowledged and Agreed to:

KELTIC FINANCIAL PARTNERS, LP

By: KELTIC FINANCIAL SERVICES LLC, its general partner

By: _______________________________________

Name:

Title:

JIHUHU

Schedule 5.2

Other Names



Hudson Technologies Company

dba Hudson Technologies of Tennessee

dba Hudson Technologies Company of Tennessee



Schedule 5.3

Subsidiaries and Affiliates



Parent Company is Hudson Technologies, Inc. ("Parent"), a New York corporation

Parent is the sole stockholder of Hudson Holding's, Inc. ("Holding"), a Nevada Corporation

Holding is the sole stockholder of Borrower, Hudson Technologies Company, a Tennessee Corporation

The following Persons may be deemed "Affiliates" as that term is defined in Section 1.3:

Hudson Technologies, Inc.

Hudson Holdings, Inc.

Fleming US Discovery Fund III, LP

Fleming US Discovery Offshore Fund III, L.P.





Schedule 5.8
Real Estate

Leased by Borrower





|Facility         | Address                       | Landlord                           | Term                    
|---------------- | ----------------------------- | ---------------------------------- | ------------------------
|Seattle, Wa      | 320 26th St. NW, Ste 9        | Park 26, LLC                       | 5/1/06 -4/30/07         
|                 | Auburn, Washington            | c/o The Andover Company, Inc.      | currently month to month
|                 |                               | 415 Baker Boulevard, Suite 200     |                         
|                 |                               | Tukwila, WA  98188                 |                         
|                 |                               |                                    |                         
|Charlotte, NC    | 3300 International Airport Dr | AMB Institutional Alliance         | 9/15/04 - 11/30/09      
|                 | Suite 800                     | c/o CB Richard Ellis               |                         
|                 | Charlotte, North Carolina     | 201 South College Street           |                         
|                 |                               | Charlotte, NC  28244               |                         
|                 |                               |                                    |                         
|Pearl River, NY  | 275 N. Middletown Road        | 275 N. Middletown Road, LLC        | 1/1/03 - 12/31/07       
|                 | Pearl River, New York         | 275 North Middletown Road          |                         
|                 |                               | Pearl River,  New York  10965      |                         
|                 |                               |                                    |                         
|Baton Rouge, La. | 11245 Airline Highway         | Reulet Family Holdings, LLC        | 8/1/02 - 7/31/05        
|                 | Baton Rouge, Louisiana        | c/o John A. Reulet, Sr., President | currently month to month
|                 |                               | 3037 Jones Creek Road              |                         
|                 |                               | Baton Rouge, Louisiana  70817      |                         
|                 |                               |                                    |                         
|Raymond, NH      | 64 Freetown Rd, Ste. 3        | Kountry Donut & Bake Shop, Inc.    | 6/1/06 - 6/30/07        
|                 |                               | 64 Freetown Rd.                    |                         
|                 |                               | Raymond, NH                        |                         
|                 |                               |                                    |                         
|Pottsboro, TX    | 501 Hwy 120 North             | the Preston Plaza ownership        | 9/14/06 -8/31/08        
|                 | Suites 101 & 102              | acting herein and through          |                         
|                 | Pottsboro, TX  75076          | Regina Hogenson", 142 Chrissa Dr.  |                         
|                 |                               | Pottsboro, Texas  75076            |                         
|                 |                               |                                    |                         
|Orangeburg, NY   | 50 Ramland Road               | 50 Ramland LLC                     | 6/15/06 - 6/30/11       
|                 | Orangeburg, NY                | Orangeburg, NY 10962               |                         
|                 |                               |                                    |                         
|                 |                               |                                    |                         



Owned

3402 North Mattis Ave, Champaign, Illinois  61821 - acquired 5/31/05

Schedule 5.9

Intellectual Property



US Patents



|TITLE-NAME               | TYPE            | INVENTOR    | OWNER         | DATE ISSUED   | NUMBER                    
|------------------------ | --------------- | ----------- | ------------- | ------------- | --------------------------
|                         |                 |             |               |               |                           
|Method & Apparatus       |                 |             |               |               |                           
|for Refrigerant          |                 |             |               |               |                           
|Reclamation              | Patent          | K. Zugibe   | Hudson	210    | 1/3/95        | 5,377,499                 
|                         |                 |             |               |               |                           
|Hydraulic System         |                 |             |               |               |                           
|for Recovering           |                 |             |               |               |                           
|Refrigerants             | Patent          | K. Zugibe   | Hudson	209    | 4/2/96        | 5,502,974                 
|                         |                 |             |               |               |                           
|Method & Apparatus       |                 |             |               |               |                           
|for Reclaiming a         |                 |             |               |               |                           
|Refrigerant              | Patent          | J. Todack   | Hudson        | 6/11/91       | 5,022,230                 
|                         |                 |             |               |               |                           
|Apparatus for Recovering |                 |             |               |               |                           
|and Analyzing Volatile   |                 |             |               |               |                           
|Refrigerants             | Patent          | K. Zugibe   | Hudson        | 9/8/98        | 5,802,859                 
|                         |                 |             |               |               |                           
|Apparatus & Method       |                 |             |               |               |                           
|and Analyzing Volatile   |                 |             |               |               |                           
|Refrigerants             | Patent          | K. Zugibe   | Hudson        | 11/7/00       | 6,141,977                 
|                         |                 |             |               |               |                           
|Method & Apparatus       |                 |             |               |               |                           
|For Sonic Cleaning of    |                 |             |               |               |                           
|Heat Exchangers          | Patent          | K. Zugibe   | Hudson	204    | 9/18/01       | 6,290,778                 
|                         |                 |             |               |               |                           
|Apparatus & Method       |                 |             |               |               |                           
|For Flushing a           |                 | K. Zugibe & |               |               |                           
|Chiller System           | Patent          | A. Mika     | Hudson 	203   | 3/19/02       | 6,357,240                 
|                         |                 |             |               |               |                           
|Apparatus & Method       |                 |             |               |               |                           
|For Flushing a           |                 | A. Mika &   |               |               |                           
|Refrigeration System     | Patent          | C. Harkins  | Hudson  202   | 12/26/00      | 6,164,080                 
|                         |                 |             |               |               |                           
|Method & Apparatus       |                 |             |               |               |                           
|For Measuring and        |                 |             |               |               |                           
|Improving Efficiency     |                 | K. Zugibe & |               |               |                           
|In Refrigeration Systems | Patent          | D. Schmidt  | Hudson 206A   | 1/14/03       | 6,505,475                 
|                         |                 |             |               |               |                           
|Method & Apparatus       |                 |             |               |               |                           
|For Measuring and        |                 |             |               |               |                           
|Improving Efficiency     |                 | K. Zugibe & |               |               |                           
|In Refrigeration Systems | Patent Pending  | D. Schmidt  | Hudson  206.1 | filed 1/7/03  | App. # 10/338,941         
|                         | Allowed 4/19/05 |             |               |               |                           
|                         |                 |             |               |               |                           
|Method & Apparatus       |                 |             |               |               |                           
|For Measuring and        |                 |             |               |               |                           
|Improving Efficiency in  |                 | K. Zugibe & |               |               | App. # 11/182,249         
|Refrigeration Systems    | Patent Pending  | D. Schmidt  | Hudson 206.2  | filed 7/14/05 | Allowed 3/15/06 11/182,249

Schedule 5.9 (continued)

|Method & Apparatus       |                |             |            |                |           
|------------------------ | -------------- | ----------- | ---------- | -------------- | ----------
|For Measuring and        |                |             |            |                |           
|Improving Efficiency     |                | K. Zugibe & |            |                |           
|In Refrigeration Systems | Patent Pending | D. Schmidt  | Hudson     | filed 1/7/00   | 6,505,475 
|                         |                |             |            |                |           
|Method & Apparatus       |                |             |            |                |           
|For Optimizing           |                |             |            |                |           
|Refrigeration Systems    | Provisional    | K.Zugibe    | Hudson 208 | filed 12/19/02 | 60/434,847
|                         | Patent App.    |             |            | Filed 12/9/03  | 10/730791 

FOREIGN PATENTS

|Method & Apparatus    |                  |                                                                                                                   |                                          |                           
|--------------------- | ---------------- | ----------------------------------------------------------------------------------------------------------------- | ---------------------------------------- | --------------------------
|for Reclaiming a      |                  |                                                                                                                   |                                          |                           
|Refrigerant           | Patent	J. Todack | CANADA                                                                                                            | Exp. 5/24/11                             | Patent # 2,084,088        
|                      |                  |                                                                                                                   |                                          |                           
|Method & Apparatus    |                  |                                                                                                                   |                                          |                           
|For Optimizing        |                  |                                                                                                                   |                                          |                           
|Refrigeration Systems | PCT	K.Zugibe     | Hudson 208PCT                                                                                                     | filed 12/9/03                            | PCT/US03/39175            
|                      |                  |                                                                                                                   |                                          |                           
|Method & Apparatus    |                  |                                                                                                                   |                                          |                           
|for Refrigerant       |                  | Hudson 210                                                                                                        |                                          |                           
|Reclamation           | Patent	K. Zugibe | BRAZIL                                                                                                            | Patent Issued 8/8/00                     | Expires 12/6/2014,        
|                      |                  |                                                                                                                   |                                          | Patent #PI9404879-7 8/8/00
|                      |                  |                                                                                                                   |                                          |                           
|                      |                  | CANADA                                                                                                            | Patent Issued 8/20/02                    | Expires 12/8/2014,        
|                      |                  |                                                                                                                   |                                          | Patent #2137771           
|                      |                  |                                                                                                                   |                                          |                           
|                      |                  | CHINA                                                                                                             | Patent issued 11/9/2001                  | Expires 12/9/2014,        
|                      |                  |                                                                                                                   |                                          | Reg. #82500               
|                      |                  |                                                                                                                   |                                          |                           
|                      |                  | COSTA RICA                                                                                                        | Patent Pending,                          |                           
|                      |                  |                                                                                                                   | application filed 12/7/94                | SN 5042                   
|                      |                  |                                                                                                                   |                                          |                           
|                      |                  | ISRAEL                                                                                                            | Patent issued 10/14/97                   | Expires 12/6/14,          
|                      |                  |                                                                                                                   |                                          | Patent#111899             
|                      |                  |                                                                                                                   |                                          |                           
|                      |                  | JAPAN                                                                                                             | Patent issued                            |                           
|                      |                  |                                                                                                                   | application filed 	12/8/94               | SN 331070/94              
|                      |                  |                                                                                                                   |                                          |                           
|                      |                  | MEXICO-                                                                                                           | Patent Issued 6/25/99 - Expires 12/9/14, | Patent # 192486           
|                      |                  |                                                                                                                   |                                          |                           
|                      |                  | POLAND -                                                                                                          | Patent Issued 12/1/98 - Expires 12/5/14. | Patent#176 518            
|                      |                  |                                                                                                                   |                                          |                           
|                      |                  | RUSSIA-                                                                                                           | Patent Issued 8/20/99 - Expires 8/20/14. | Patent # 2134851          
|                      |                  |                                                                                                                   |                                          |                           
|                      |                  | EUROPEAN COMMUNITY -                                                                                              | Patent Issued 3/31/99. Expires 12/8/14.  | Patent # 0682218          
|                      |                  |                                                                                                                   |                                          |                           
|                      |                  | (Belgium, Denmark, France, Germany, Italy, Netherlands, Spain, Sweden, Switzerland/Liechtenstein, United Kingdom)
|                      |                  |                                                                                                                   |                                          |                           





Schedule 5.9 (continued)



|Method & Apparatus    |           |              |                |                       
|--------------------- | --------- | ------------ | -------------- | ----------------------
|For Optimizing        |           |              |                |                       
|Refrigeration Systems | K. Zugibe | HUDSON 208   |                |                       
|                      |           | Australia    | filed 6/7/05   | App # 2003300845      
|                      |           | Canada       | filed 6/6/05   | App # 2,509,207       
|                      |           | China        | filed 8/9/05   | App # 200380109603.5  
|                      |           | Eur. Comm.   | filed 4/29/05  | App # 03 812 911.0    
|                      |           | India        | filed 6/7/05   | App # 1306/KOL NP/05  
|                      |           | Israel       | filed 6/7/05   | App # 169,052         
|                      |           | Japan        | filed 6/9/05   | App # 2005-511749     
|                      |           | So. Korea    | filed 6/9/05   | App # 2005-7010468    
|                      |           | Mexico       | filed 6/10/05  | App # PA/a/2005/006174
|                      |           | New Zealand  | filed 6/13/05  | App # 540685          
|                      |           | Philippine   | filed 6/9/05   | App # 501094-1-05     
|                      |           | Poland       | filed 10/13/05 | App # P 377583        
|                      |           | Eurasian     | filed 7/8/05   | App # 200500945       
|                      |           | Singapore    | filed 6/9/05   | App # 200503690-0     
|                      |           | South Africa | filed 6/8/05   | App # 2005/04679      
|                      |           |              |                |                       
|                      |           | HUDSON 208.1 |                |                       
|                      |           | South Africa | filed 6/5/06   | App # 2006/04590      







US TRADEMARKS





|TITLE-NAME                | TYPE         | INVENTOR | OWNER      | DATE ISSUED | NUMBER          
|------------------------- | ------------ | -------- | ---------- | ----------- | ----------------
|                          |              |          |            |             |                 
|GLACIER                   | Trademark    | N/A      | Hudson 806 | 3/2/99      | 2,227,148       
|                          |              |          |            |             |                 
|ZUGIBEAST                 | Trademark    | N/A      | Hudson 805 | 7/9/96      | 1,985,422       
|                          |              |          |            |             |                 
|HTI                       | Service Mark | N/A      | Hudson     | 4/23/96     | 1,970,063       
|                          | Trademark    |          |            |             |                 
|                          |              |          |            |             |                 
|R-SIDE                    | Service Mark | N/A      | Hudson 808 | 11/7/00     | Ser. # 75/532328
|                          | Trademark    |          |            | 7/30/02     | Reg # 2601434   
|                          |              |          |            |             |                 
|REFRIGERANTSIDE           | Service Mark | N/A      | Hudson 807 | 10/24/00    | Ser. # 75/532327
|                          | Trademark    |          |            | 4/9/02      | Reg # 2559214   
|                          |              |          |            |             |                 
|Hudson Technologies, Inc. | Service Mark |          |            |             |                 
|                          | Trademark    | N/A      | Hudson 804 | 4/23/96     | 1,969,986       
|                          |              |          |            |             |                 
|Chiller Chemistry         | Service Mark |          |            |             |                 
|                          | Trademark    | N/A      | Hudson 803 | 3/21/05     | Ser #78/591,426 
|                          |              |          |            |             |                 
|ChillerSmart              | Service Mark |          |            |             |                 
|                          | Trademark    | N/A      | Hudson 802 | 3/21/05     | Ser #78/591,413 
|                          |              |          |            |             |                 

Schedule 5.9 (continued)





FOREIGN TRADEMARKS



|TITLE-NAME        |              | INVENTOR |            | COUNTRY      | DATE     | NUMBER    
|----------------- | ------------ | -------- | ---------- | ------------ | -------- | ----------
|                  |              |          |            |              |          |           
|Chiller Chemistry | Service Mark |          | HUDSON 803 |              |          |           
|                  | Trademark    | N/A      |            | South Africa | 10/17/05 | 2005/19998
|                  |              |          |            | MPU          | 9/21/05  | 878513    
|                  |              |          |            |              |          |           
|ChillSmart        | Service Mark |          | HUDSON 802 |              |          |           
|                  | Trademark    | N/A      |            | South Africa | 10/17/05 | 2005/19997
|                  |              |          |            | MPU          | 9/22/05  | 878512    
|                  |              |          |            |              |          |           



Patent Licenses



Reciprocal licenses between Parent and Borrower (not formalized)

License of Borrower's Patent #5,022,230 granted to James Todack for a total of 10 machines that were leased to Borrower in 1994, of which six were purchased by Borrower in 2001 and four were returned to James Todack in 2001.

License to The BOC Group PLC, and BOC Limited, pursuant to Agreements, dated June 23, 2003, to utilize equipment and to use Trademarks in the United Kingdom and the Republic of Ireland.

License to The BOC Group PLC and African Oxygen Limted, pursuant to Agreement dated March 23, 2004, to utilize equipment and to use Trademarks in the Republic of South Africa.



Trademark Licenses



All trademarks licensed to Borrower (not formalized)



License to The BOC Group PLC, and BOC Limited, pursuant to Agreements, dated June 23, 2003, to utilize equipment and to use Trademarks in the United Kingdom and the Republic of Ireland.

License to The BOC Group PLC and African Oxygen Limted, pursuant to Agreement dated March 23, 2004, to utilize equipment and to use Trademarks in the Republic of South Africa.



Copyrights



None



Copyright Licenses

None

Schedule 5.13

Litigation

None









Schedule 5.14

Receivables Locations





|Facility        | Address                | Landlord                      | Term             
|--------------- | ---------------------- | ----------------------------- | -----------------
|                |                        |                               |                  
|Pearl River, NY | 275 N. Middletown Road | 275 N. Middletown Road, LLC   | 1/1/03 - 12/31/06
|                | Pearl River, New York  | 275 North Middletown Road     |                  
|                |                        | Pearl River,  New York  10965 |                  

Schedule 5.15

Current Inventory Locations - as of 3/31/07



|Facility         | Address                        | Landlord                           | Term                    
|---------------- | ------------------------------ | ---------------------------------- | ------------------------
|Seattle, Wa.     | 1320 26th St. NW, Ste 9        | Park 26, LLC                       | 5/1/06 -4/30/07         
|                 | Auburn, Washington             | c/o The Andover Company, Inc.      |                         
|                 |                                | 415 Baker Boulevard, Suite 200     |                         
|                 |                                | Tukwila, WA  98188                 |                         
|                 |                                |                                    |                         
|Charlotte, NC    | 3300 International Airport Dr. | AMB Institutional Alliance         | 9/15/04 - 11/30/09      
|                 | Suite 800                      | c/o CB Richard Ellis               |                         
|                 | Charlotte, North Carolina      | 201 South College Street           |                         
|                 |                                | Charlotte, NC  28244               |                         
|                 |                                |                                    |                         
|Pearl River, NY  | 275 N. Middletown Road         | 275 N. Middletown Road, LLC        | 1/1/03 - 12/31/07       
|                 | Pearl River, New York          | 275 North Middletown Road          |                         
|                 |                                | Pearl River,  New York  10965      |                         
|                 |                                |                                    |                         
|Baton Rouge, La. | 11245 Airline Highway          | Reulet Family Holdings, LLC        | 8/1/02 - 7/31/05        
|                 |                                | c/o John A. Reulet, Sr., President | currently month to month
|                 |                                | 3037 Jones Creek Road              |                         
|                 |                                | Baton Rouge, Louisiana  70817      |                         
|                 |                                |                                    |                         
|Raymond, NH      | 64 Freetown Rd, Ste. 3         | Kountry Donut & Bake Shop, Inc.    | 6/1/06 - 6/30/07        
|                 | Raymond, NH                    | 64 Freetown Rd.                    |                         
|                 |                                | Raymond, NH                        |                         
|                 |                                |                                    |                         
|Pottsboro, TX    | 501 Hwy 120 North              | the Preston Plaza ownership        | 9/14/06 -8/31/08        
|                 | Suites 101 & 102               | acting herein and through          |                         
|                 | Pottsboro, TX  75076           | Regina Hogenson", 142 Chrissa Dr.  |                         
|                 |                                | Pottsboro, Texas  75076            |                         
|                 |                                |                                    |                         
|Orangeburg, NY   | 50 Ramland Road                | 50 Ramland LLC                     | 6/15/06 - 6/30/11       
|                 | Orangeburg, NY                 | Orangeburg, NY 10962               |                         
|                 |                                |                                    |                         
|Champaign, Il.   | 3402 North Mattis Ave          |                                    |                         
|                 | Champaign, Illinois  61821     | Company owned - acquired 5/31/05   |                         
|                 |                                |                                    |                         





The Company is currently storing one vehicle, a trailer, various pieces of service equipment, and approximately 5,000 lbs. of refrigerant at a facility operated by CEM-CORP, located at 3191 Commercial Street San Diego, California  92113

In addition to the foregoing, the Borrower maintains inventory at the following bonded warehouses:

Associated Transfer & Storage, Inc., 301 Wilbur Heights Road, Champaign, Illinois

Freeport Distribution Inc., 4802 W. Polk, Phoenix, Arizona  85043

Lone Star Integrated Distribution, Inc., 800 Burnett, Houston, Texas  77009

Texas Cartage Warehouse, Inc., 12344 E. Northwest Hwy., Dallas, Texas  75228

Larsen Warehousing & Distribution, Inc., 11685 E. 53rd Ave., Denver CO  80239