**Exhibit23**

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**Consentof Independent Registered Public Accounting Firm**

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The Board of DirectorsChemtura Corporation:

 

We consent to theincorporation by reference in the registration statements (Nos. 33-21246,33-42280, 33-67600, 333-62429, 333-60422, 333-87035, 333-71030, 333-71032,333-87886, 333-123857, 333-126341 and 333-136217) on Form S-8 andregistration statements (Nos. 333-123857, 333-119641, 333-35678 and 333-83901)on Form S-4 of Chemtura Corporation of our report dated March 2,2009, with respect to the consolidated balance sheets of Chemtura Corporationand subsidiaries (the Company) as of December 31, 2008 and 2007, and therelated consolidated statements of operations, stockholders’ equity, and cashflows for each of the years in the three-year period ended December 31,2008, and the related financial statement schedule, and the effectiveness ofinternal control over financial reporting as of December 31, 2008, which report appearsin the December 31, 2008 annual report on Form 10-K of Chemtura Corporation.

 

Our report dated March 2,2009 contains an explanatory paragraph that states that the Company has limitedliquidity, has suffered recurring losses from continuing operations, and has asignificant amount of debt outstanding under agreements which include variouscovenants, certain of which the Company was not in compliance with at December 31,2008 and which it does not expect to be in compliance with subsequent to theexpiration of the waiver period for the balance of 2009 resulting in a workingcapital deficiency at December 31, 2008. Such factors raise substantial doubt about the Company’s ability tocontinue as a going concern. *** ***The consolidatedfinancial statements and financial statement schedule do not include anyadjustments that might result from the outcome of this uncertainty.

 

Ourreport includes an explanatory paragraph which states that as discussed in Note1 to Notes to Consolidated Financial Statements, the Company adopted theprovisions of Statement of Financial Accounting Standards No. 123(R), “*Share-Based Payment*” and Staff AccountingBulletin No. 108,*Considering theEffects of Prior Year Misstatements in Current Year Financial Statements*as of January 1, 2006, and Statement of Financial Accounting Standards No. 158,*Employers’ Accounting for Defined Benefit Pensionand Other Postretirement Plans*, as of December 31, 2006, andFinancial Accounting Standards Board Interpretation No. 48,*Accounting for Uncertainty in Income Taxes*,as of January 1, 2007 and Statement of Financial Accounting Standards No. 157,*Fair Value Measurements*, specificallyfor financial assets and liabilities, as of January 1, 2008.

 

Ourreport with respect to the effectiveness of internal control over financialreporting as of December 31, 2008, expresses our opinion that the Companydid not maintain effective internal control over financial reporting as of December 31,2008 because of the effect of a material weakness on the achievement of theobjectives of the control criteria and contains an explanatory paragraph thatstates that a material weakness related to the Company’s review of its incometax accounts has been identified and included in management’s assessment as of December 31,2008.

 

/s/ KPMG LLP

 

Stamford, ConnecticutMarch 2, 2009

 

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