From: George Walton <georgewalton**At_Symbol_Here**REACTIVES.COM>
Subject: Re: [DCHAS-L] Pyrophorics
Date: Thu, 24 Sep 2015 21:30:06 -0400
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: 000601d0f731$b68322d0$23896870$**At_Symbol_Here**
In-Reply-To <012201d0f705$aa33c100$fe9b4300$**At_Symbol_Here**>

We worked at a manufacturing facility in North Carolina years ago.  When breading lines containing t-BuLi,  lithium amides and other organo-lithium compounds, we used glove bags inerted with argon.  The in-plant definition of limiting oxygen concentration was 4%.  We did not do any research on this – just worked in accordance with the facility’s safety plans and SOPs.


George C. Walton, CHMM

Reactives Management Corporation

1025 Executive Blvd., Suite 101

Chesapeake, VA  23320

(757) 436-1033


From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**] On Behalf Of NEAL LANGERMAN
Sent: Thursday, September 24, 2015 4:15 PM
Subject: [DCHAS-L] Pyrophorics


Does anyone have any citations for the low limiting oxygen concentration of pyrophoric compounds.  I am specifically looking for the oxygen percentage at which compounds such as t-BuLi become non-ignitable.  For example, that value is 5% for hydrogen.  I have found a reference for silane, but, as is typical for silane, there are a myriad of confounding issues.


I have searched both SciFinder and Science Direct and have not found helpful data.








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