From: John Callen <jbcallen**At_Symbol_Here**GMAIL.COM>
Subject: Re: [DCHAS-L] Old Perchloric Spill-Wooden Cabinet
Date: Fri, 11 Sep 2020 13:14:56 -0500
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID: 67351897-B2D5-40F3-8009-DB8C32B72164**At_Symbol_Here**


Do not treat or remediate the situation yourself.  

Please contact a licensed abatement and environmental contractor in the St. Louis area to handle the situation.

All My Best,

John B. Callen, Ph.D.
3M Personal Safety Division - Retired
ACS/DCHAS Founding Member
(312) 632-0195

On Sep 11, 2020, at 12:58 PM, Nora Dunkel <noradunkel51**At_Symbol_Here**WEBSTER.EDU> wrote:

Hello all,
What is the best way to deal with a perchloric acid spill on wood, when the spill occurred several months ago? 
A biology faculty member recently retired and his lab space was assigned to another biologist.  When the new PI moved into the lab, she discovered purple splash marks on a wooden cabinet.  Apparently, the previous PI had spilled some concentrated perchloric acid (70%) and the acid stained the wood.  Nobody is sure exactly when the spill occurred-sometime between October 2018 and February 2020.
Besides the risk of spontaneous fire, what other hazards do these doors pose?  Should the doors be disposed of as hazardous waste?  If so, what hazards should the waste hauler and I consider?  The cabinet doors will need to be removed to dispose of them; do they need to be treated as potentially explosive?  How should they be stored until our next waste pickup?
Thanks for your help!
Nora Dunkel
Chemical Safety Officer
Webster University
Browning Hall 314
314-246-2244 (office)
661-348-1445 (cell)
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