Date: Fri, 8 Aug 2008 11:00:25 -0400
Reply-To: "Dr. Jay A. Young" <chemsafety**At_Symbol_Here**VERIZON.NET>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: "Dr. Jay A. Young" <chemsafety**At_Symbol_Here**VERIZON.NET>
Subject: Re: Storage of Peroxide Formers
Comments: To: "Latimer, Lee"


The problem with storing peroxide formers in so-called explosion proof 
refrigerators is that they can be forgotten and remain "lost" in the back 
corner on the bottom shelf.  Further, the low temperature of a refrigerator 
is not low enough to slow the peroxide forming reaction that will 
occur--since that reaction is itself inherently slow .

Peroxide formers should be stored separately from other chemicals, 
especially from oxidizing agents, in a cool, dry, storage room and 
discarded, whether opened or not, before any peroxide is formed. For that 
information, and for a list of peroxide formers, see Bretherick, of course.

If you don't have a copy of Bretherick, you really should get a copy, and 
read it.

Jay Young

----- Original Message ----- 
From: "Latimer, Lee" 
Sent: Tuesday, August 05, 2008 12:53 PM
Subject: Re: [DCHAS-L] Storage of Peroxide Formers

Going through old emails, I came by this one which is pertinent to a
discussion going on here.

I would appreciate background on why storing peroxide formers cold is a
bad idea.

I would also appreciate hearing about policies at other institutions,
especially corporate, on storage and on timed disposal.  At a former
employer we had very stringent rules on ether and THF in particular.
What other solvents are in similar category besides di-isopropylether.

Thanks in advance.

Lee Latimer

-----Original Message-----
From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**LIST.UVM.EDU] On Behalf Of
Samuella B. Sigmann
Sent: Tuesday, October 30, 2007 6:18 AM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: [DCHAS-L] Storage of Peroxide Formers

The general storage protocol for diethyl ether, THF, etc. here in our
department has always been in refrigerators for designed for
flammables.  I am trying to educate the faculty about the hazards
associated with the practice of refrigerating peroxide formers.  Any
advice about what to say when confronted with, "...but I have always
done this and never had a problem."

Thanks in advance,


The Washington Post's Style Invitational asked readers to take any word
from the dictionary, alter it by adding, subtracting, or changing one
letter, and supply a new definition.

*Dopeler** effect*: The tendency of stupid ideas to seem smarter when
they come at you rapidly.

Samuella B. Sigmann

Lecturer/Safety Committee Chair

A. R. Smith Department of Chemistry

Appalachian State University

525 Rivers Street

Boone, NC   28608

Phone: 828 262 2755

Fax: 828 262 6558

Email: sigmannsb**At_Symbol_Here** 

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