Date: Fri, 29 Apr 2005 14:35:41 -0500
Reply-To: Kent Candee <Kent.A.Candee**At_Symbol_Here**EMCINS.COM>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: Kent Candee <Kent.A.Candee**At_Symbol_Here**EMCINS.COM>
Subject: Re: Peroxides within empty containers.
Comments: To: ILPI
In-Reply-To: <p06010200be982518aa48**At_Symbol_Here**[]>

Thanks Rob. The latter website has some good information on the science.


On 4/29/2005 1:01 PM, ILPI wrote:

> The crystals (if they are really present, of course) can can detonate
> all by themselves. Inside a metal can with a relatively narrow
> opening, this could produce some serious shrapnel.
> See here: They might be good
> folks to talk to about this.
> Additional pictures and information about peroxides is available
> here:
> Rob Toreki
>> Scenario: Ethyl ether in metal container that is over 10 years old.
>> Peroxide content unknown. Container is empty (<3%) to the best of our
>> knowledge. Cap is clear plastic with no visible signs of peroxides.
>> Understand that peroxides can concentrate as the ether evaporates.
>> Setting: High school chemical storage room. Lab pack team has been in
>> to pack chemicals and left the ethyl ether behind because of its
>> potential explosiveness.
>> Questions: How dangerous is this empty can? Does it have to be treated
>> as a hazardous waste? Our understanding is that the peroxide crystals
>> themselves do not have considerable detonation force without the
>> contents of the ether. The ether acts as the fuel for the explosion.
>> Can the empty container go in the normal trash.
>> Your thoughts and comments are appreciated. We have been struggling
>> with this issue; how to deal with legacy empty ether containers.
> --
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Kent A. Candee, CIH
Environmental Health Division
EMC Insurance Companies
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