From: DCHAS Membership Chair <membership**At_Symbol_Here**DCHAS.ORG>
Subject: [DCHAS-L] glycol decomposition products
Date: Wed, 28 Aug 2019 12:15:53 -0700
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: 496AEE3A-1BD4-442A-A623-B59523B603F4**At_Symbol_Here**

From: Monona Rossol
Re: glycol decomposition products

As soon as the conference business all settles down, I have a problem that someone out there might be able to solve. I can theorize with the best of you, but I would dearly like to talk to anyone who has anything, or can direct me to any source, of empirical data on the decomposition products at 371 degrees C (700 degrees F) of the following chemicals:

1. triethylene glycol CAS# 112-27-6
2. monopropylene glycol (proplyene glycol; 1,2-propanediol) CAS# 57-55-6
3. diethylene glycol CAS# 111-46-6
4. dipropylene glycol(s) CAS# 25265-71-8, 106-62-7, 110-98-5, 108-61-2
5. 1,2-butylene glycol (1,2-butanediol) CAS# 584-03-2
6. 1,3-butylene glycol (1,3-butanediol) CAS# 107-88-0
7. glycerin (glycerol; 1,2,3-propanetriol) CAS# 56-81-5
8. white mineral oil, medicinal or food grade CAS# 8042-47-5
9. Dow Polyglycol (Carbowax) E 200 polyethylene glycol
10. Polypropylene glycol MW 200-400



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