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Product Stewardship/Memorandum of Understanding

Product Stewardship Program (PSP) for Six Siloxanes Conducted Under a Memorandum of Understanding (MOU) Signed by EPA and the Dow Corning Corporation; Notice of Receipt and Availability of the MOU Data

EPA issued a Federal Register notice at 74 FR 38013, July 30, 2009 announcing receipt and availability of data developed under a Memorandum of Understanding (MOU) signed on April 9, 1996, by EPA and the Dow Corning Corporation. The MOU covered six siloxanes deemed representative of a broad class of siloxanes that have widespread use in a variety of industrial and consumer applications. A Public Docket has been established and documents are publicly available under Docket Number EPA-HQ-OPPT-2009-0180 at Regulations.gov.

Under the MOU health effects and exposure data as well as strategies for communicating with employees, customers, and the public were developed for the following siloxanes:

 Octamethylcyclotetrasiloxane  D4  556-67-2
 Decamethylcyclopentasiloxane  D5  541-02-6
 Dodecamethylcyclohexasiloxane  D6  540-97-6
 Hexamethyldisiloxane  HMDS  107-46-0
 Polydimethylsiloxane  PDMS 10 cs  63148-62-9
 Polydimethylsiloxane  PDMS 350 cs  63148-62-9

The Product Stewardship MOU was based on the Responsible Care principles developed by the Chemical Manufacturers Association - now the American Chemistry Council, including fifteen product stewardship goals organized under A) Communication of Health and Safety Data: B) Toxicity and Exposure Data Development: C) Pollution Prevention Actions and D) Environmental Responsibility.


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