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Subject: [DCHAS-L] Chemical Safety headlines from Google (21 articles)

Date: Nov 12, 2012 07:21 UTC

Author: Secretary, ACS Division of Chemical Health and Safety <secretary**At_Symbol_Here**DCHAS.ORG>

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Subject: [DCHAS-L] Lab Safety Specialist position, University of Kansas

Date: Nov 12, 2012 10:59 UTC

Author: Secretary, ACS Division of Chemical Health and Safety <secretary**At_Symbol_Here**DCHAS.ORG>

From: Ralph B Stuart <rstuart**At_Symbol_Here**CORNELL.EDU>

Subject: [DCHAS-L] Supercritical Fluid Extractor that uses Nitrous Oxide

Date: Nov 12, 2012 08:55 UTC

Reply-To: DCHAS-L

In-Reply-To:  

Demystify: 
We have a researcher who would like to replace carbon dioxide in a Supercritical Fluid Extractor with nitrous oxide. A google search found a warning from 1993 that there is history of problems with this:
Warning concerning the use of nitrous oxide in supercritical fluid extractions
http://pubs.acs.org/doi/abs/10.1021/ac00069a028

Does anyone on the list have experience with whether this problem still exists with newer equipment for this process or other best practices for managing this concern?

Thanks for any help with this.

- Ralph

Ralph Stuart CIH
Chemical Hygiene Officer
Department of Environmental Health and Safety
Cornell University

rstuart**At_Symbol_Here**cornell.edu

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