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 DataEPA 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 http://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.
![[logo] US EPA](http://www.epa.gov/epafiles/images/logo_epaseal.gif)