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Re: Green Earth drycleaning, D5 solvent



I have seen somewhere that groups are reviewing the cleanup of the solvent.
The concern is that current methods may spread contaminents from one
cycle to the other unless expensive cleanup is done.  Sorry I can't remember where
I saw it.
 
 
----- Original Message -----
Sent: Tuesday, July 22, 2003 3:24 PM
Subject: Green Earth drycleaning, D5 solvent

I'm curious if those of you who work with drycleaners are 1) seeing
drycleaners convert to Green Earth solvent
(D5=decamethyloctapentasiloxane), and 2) aware of the new data EPA has
received on D5?  I've received calls from several TAPs asking me about
the new data submitted to EPA in February and suggesting I post this on
P2Tech.

D5 is marketed under the name Green Earth and is a volatile methyl
siloxane.  D5 is also used in various solvent cleaning operations not
just drycleaning.

EPA HQ  recently received some new information about D5/the Green Earth
drycleaning solvent. The data was filed under the TSCA Section 8(e)
docket - a notice of "substantial risk of injury to health or the
environment."  The preliminary results of an ongoing 24 month combined
chronic/oncogenicity study of D5 in rats indicates an increase in
uterine endometrial tumors for rats exposed for 12-24 months. See
<
http://www.epa.gov/opptintr/tsca8e/doc/8ehq/2003/february03/8EHQ-0203-15273A.pdf
> for the actual submittal to EPA.

EPA's Office of Prevention, Pesticides and Toxic Substances reviewed the
new data at the request of California's Office of Environmental Health
Hazard Assessment and issued a statement that "At this time, the results
of this study indicate there is a potential carcinogenic hazard
associated with D5."   Dow Corning, which submitted the data to EPA
under an MOU called the Siloxane Product Stewardship Program, is
continuing further work.


Eileen Sheehan
Pollution Prevention Team
U.S. EPA Region 9
75 Hawthorne Street
San Francisco, CA  94105
Ph: 415 972-3287
sheehan.eileen@epa.gov


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