From: Ellen M. Sweet <ems325**At_Symbol_Here**cornell.edu>
Subject: Re: [DCHAS-L] Gases that may Autopolymerize
Date: Tue, 11 Apr 2017 17:02:45 +0000
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: CO2PR04MB2214B350FCB4878C29B667789A000**At_Symbol_Here**CO2PR04MB2214.namprd04.prod.outlook.com
In-Reply-To <016F5C65-6ED2-4689-8009-2BE1C37561EC**At_Symbol_Here**dchas.org>


Hi everyone,
From what I can gather on the autopolymerizing gases question below, these should have an expiration date on the cylinder and must be returned to the supplier before this passes. This is more important than with the common peroxide forming chemicals that we end up finding in storage years later because the risk of explosion is greater.
These gases are also flammable and either toxic or highly, by code. So, I am assuming they are being stored in gases cabinets, or that a code review has determined that they don't need to be.
I would reach out to your EHS department for assistance with developing the SOP. But, I hope this helps.
Ellen


Ellen Sweet
Laboratory Ventilation Specialist
Department of Environmental Health and Safety, Cornell University
American Chemical Society, Division of Chemical Health and Safety
315-730-8896


-----Original Message-----
From: ACS Division of Chemical Health and Safety [mailto:DCHAS-L**At_Symbol_Here**PRINCETON.EDU] On Behalf Of Secretary, ACS Division of Chemical Health and Safety
Sent: Monday, April 10, 2017 1:29 PM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: [DCHAS-L] Gases that may Autopolymerize

Can anyone suggest a more current information with regard to the question below? There have been no updates in JCHAS since the 1996 article.

Thanks for any help with this.

- Ralph

A colleague writes:
We reference your ??Classes of Peroxide-forming chemicals" (Source: Kelly, Richard J., Chemical Health & Safety, American Chemical Society, 1996, Sept, 28-36) in our SOP. Do you have an updated version of this or similar document?

I need to find more information about gases that may autopolymerize (quote from document is below) or otherwise become hazardous. When stored as a gas, these may autopolymerize as a result of peroxide accumulation:
- Butadiene
- Chloroprene
- Tetrafluoroethylene

I am writing an SOP about this.

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