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From: mail**At_Symbol_Here**ECHELONENVIRONMENTAL.NET
Subject: Re: [DCHAS-L] 4% vs. 5% hydrogen
Date: Jun 8, 2018 13:19 UTC
Reply-To:
ACS Division of Chemical Health and Safety
In-Reply-To:
Debbie,
Did these determination come from Safety Data Sheets?
Are these DOT hazard classes for the gases?
Unfortunately, SDS’s can be very unreliable.
Ron Harvey
Echelon Environmental
843-599-0330
https://www.linkedin.com/in/ronharvey/
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU> On Behalf Of Debbie M. Decker
Sent: Tuesday, June 5, 2018 5:34 PM
To: DCHAS-L**At_Symbol_Here**PRINCETON.EDU
Subject: [DCHAS-L] 4% vs. 5% hydrogen
Hi all:
Riddle me this – why is 5% hydrogen in nitrogen considered NOT flammable and 4% in argon considered flammable? Tried to reach Praxair but no one is home.
This makes absolutely no sense to me.
Thanks,
Debbie
Debbie M. Decker, CCHO, ACS Fellow
Past Chair, Division of Chemical Health and Safety
Councilor and Programming Co-Chair
University of California, Davis
(530)754-7964
(530)304-6728
dmdecker**At_Symbol_Here**ucdavis.edu
Birkett's hypothesis: "Any chemical reaction
that proceeds smoothly under normal conditions,
can proceed violently in the presence of an idiot."
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