From: Monona Rossol <0000030664c37427-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>
Subject: Re: [DCHAS-L] Peroxide forming compound testing program
Date: Thu, 1 Feb 2018 09:32:56 -0500
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: 16151c8e835-171d-c31b1**At_Symbol_Here**webjas-vaa151.srv.aolmail.net
In-Reply-To


Good advice.  And again my EH&S department friends, get thee to the art, theater, and architecture departments and check for two-component resin products.  I've had to call the bomb squad twice in universities to pick up 10 year-old and older half gallon containers and/or tubes of MEK-P or other peroxide catalysts.  Get these departments on your SDS and inventory system so you can watch for this stuff and insist that the quick trips to the local hardware store without documentation cease.

Monona Rossol, M.S., M.F.A., Industrial Hygienist
President:  Arts, Crafts & Theater Safety, Inc.
Safety Officer: Local USA829, IATSE
181 Thompson St., #23
New York, NY 10012     212-777-0062
actsnyc**At_Symbol_Here**cs.com   www.artscraftstheatersafety.org

 


-----Original Message-----
From: Stephen Stepenuck <sstepenuck**At_Symbol_Here**NE.RR.COM>
To: DCHAS-L <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Sent: Thu, Feb 1, 2018 4:35 am
Subject: Re: [DCHAS-L] Peroxide forming compound testing program

It might have been patriarch Jay Young who used to say [paraphrased of course] "If you suspect that a bottle might contain dangerous levels of peroxides, had you not better treat it as if they were/are indeed present?"  I have seen it mentioned that one of the more likely places for peroxides to form could be in the threads of the cap, I.e. removal of the cap for testing could trigger a detonation.   So I think it would be prudent to try to identify any known or suspected old containers early on, and get rid of them.  
After that, by all means ride herd on your current dated inventory via regular checks.
There are time thresholds for testing too.  Once a year might not be adequate for some compounds.  Purity can make a difference too, e.g. some ultrapures would not contain inhibitors commonly present in lower grades of the same stuff.

Good luck.
sjs
--
Stephen J. Stepenuck, Ph.D.
Emeritus professor of chemistry
Keene State College
Keene NH 03435-2001
sstepenuck**At_Symbol_Here**ne.rr.com
603.352.7540

On 1/31/18, 7:34 AM, ACS Division of Chemical Health and Safety on behalf of Pavlak, Edmund J  wrote:

Does anyone have a testing program in which peroxide forming chemicals are tested?  If so, what methodology are you using?  Do you have a threshold value for disposal, and is it for all peroxide formers or are there different thresholds specific to certain chemicals?
 
Thanks for your help.
 
Joe Pavlak
 
Chemical Management System
Safety and Health Services Division
Brookhaven National Laboratory
Building 120
Upton, NY 11973
631-344-2028 office
631-831-3692 cell
 
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