Date: Mon, 28 Sep 2009 12:16:46 -0400
Reply-To: "Bush, Kimberly" <kimberly_bush**At_Symbol_Here**MERCK.COM>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: "Bush, Kimberly" <kimberly_bush**At_Symbol_Here**MERCK.COM>
Subject: Re: Pressure-Generating Liquid
Comments: To: Diane Amell
In-Reply-To: A

My familiarity with this term:
 < /DIV>
Refers to thin gs that are liquid at or near room temperature but have a low boiling point and expand to a gas at slightly elevated temperatures - hence causing the build-up of press ure when stored in a sealed container.
 < /DIV>
Over simplifie d perhaps, but you get the idea.

Kimi Bush
Sta ff Chemist
Me d Chem Safety Committee Co-Chair
Merck & Co. Inc.
770 Sumneytown Pike
P.O. Box 4
West Point, PA 19486
ofc: 215-652-2766
cell: 610-223-9227
fax: 215-652-3971


From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**] On Behalf Of Diane Amell
Sent: Monday, September 28, 2009 11:29 AM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: [DCHAS-L] Pressure-Generating Liquid

Last week one of our investigators threw me a curve ball. She had an inquiry from an employer or consultant regarding "pressure-generating liqui ds". The term is new to me. I have a mental picture based on the words in the ph rase which may or may not be accurate. The only reference I have found so far re gards the old-fashioned soda acid and self-generating foam water-type extinguishe rs in the federal portable fire extinguishers standard. I have searched the feder al OSHA, NIOSH and ACS Web sites with no luck. Anyone familiar with such chemi cals? Thank you.
- Diane Amell, MNOSHA
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