From: Dr Bob <drbob**At_Symbol_Here**FLOWSCIENCES.COM>
Subject: Re: [DCHAS-L] Old Perchloric Spill-Wooden Cabinet
Date: Fri, 11 Sep 2020 18:56:02 +0000
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID: MWHPR07MB2832602A6956B55236B92EE8D9240**At_Symbol_Here**MWHPR07MB2832.namprd07.prod.outlook.com
In-Reply-To


 

 

Hi Nora Dunkel!

 

Here’s an article on Perchloric Acid I wrote a year ago. Hope some of you can use the info!

 

https://flowsciences.com/perchloric-acid-fume-hoods/

 

 

Dr. Bob Haugen

Director of Product and Technology Development

Flow Sciences, Inc.

 

910 332 4878

 

Containment ProductsGet a Quote/Consultation Get Support/Replacement Parts

 

CONFIDENTIALITY NOTE: This e-mail, including all attachments, is directed in confidence solely to the person(s) to whom it is addressed, or an authorized recipient, and may not otherwise be distributed, copied or disclosed. The contents of this transmission may also be subject to intellectual property rights and all such rights are expressly claimed and are not waived. The contents of this e-mail do not necessarily represent the views or policies of Flow Sciences Inc. or its employees.

 

 

From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> On Behalf Of Nora Dunkel
Sent: Friday, September 11, 2020 1:58 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: [DCHAS-L] Old Perchloric Spill-Wooden Cabinet

 

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?

 

A photo of the cabinet is here:  https://websteru-my.sharepoint.com/:i:/g/personal/noradunkel51_webster_edu/EQWTp-1gsb9Om9_2J0S82O0BeJAMAFe-lao45vMMYQ77Gg?e=bZFZPS

 

Thanks for your help!

Nora

 

Nora Dunkel

 

Chemical Safety Officer

Webster University

Browning Hall 314

314-246-2244 (office)

661-348-1445 (cell)

noradunkel51**At_Symbol_Here**webster.edu

 

 

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