DCHAS-L Discussion List Archive
Date: Mon, 15 Mar 2010 07:11:44 -0600
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From: Mohammad KAZEMIZADEH <mohammad.kazemizadeh**At_Symbol_Here**ARKEMA.COM>
Subject: Re: FW: Inactivation of Meta chloro peroxybenzoic acid
In-Reply-To: <48A020E1942E024DB0F2A6B68A1312440788CB6911**At_Symbol_Here**XEDAMAIL2.ex.ad3.ucdavis.edu>
In industry, Ferro sulfate solution is used to decompose residue of
hydrogen peroxide or per acids and works very good. Also a caustic
solution will works as log you keep the pH of solution above 7. In any
case you want to add your peroxide solution to the caustic or Fe+2 and
monitor the active oxygen of the mixture not to concentrate it.
M. Kazemi
Technical Manager
Additives Division
Arkema Inc.
157 Highway Avenue North
Blooming Prairie, Mn 55917
Tel.: 507-583-2427
Fax: 507-583-6648
mohammad.kazemizadeh**At_Symbol_Here**arkema.com
www.arkemagroup.com
"Debbie M. Decker"
Sent by: DCHAS-L Discussion List
03/12/2010 05:57 PM
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[DCHAS-L] FW: Inactivation of Meta chloro peroxybenzoic acid
Hey all you chemists out there! I don't quite know where to begin to give
my colleague, Dexter, advice.
Ideas?
-----Original Message-----
From: Dexter
Debbie
We are using MCPBA to make some epoxides. I need to purify the MCPBA
before I use it and the wash and crystalization process leaves a
significant anoumt in solution. Usually dichloromethane. I will
obviuosly discard this solution as toxic waste but I want to deactivate
the MCPBA that remains. I have read you can use NaI , ferrous ions,
potassium hydroxide, sodium thiosulfate, etc. What in your knowledge is
the preferred method. Thanks. Dexter
-----------------------------
Debbie M. Decker, Campus Chemical Safety Officer
Environmental Health and Safety
University of California, Davis
1 Shields Ave.
Davis, CA 95616
(530)754-7964/(530)752-4527 (FAX)
dmdecker**At_Symbol_Here**ucdavis.edu
Co-Conspirator to Make the World A
Better Place -- Visit www.HeroicStories.com and join the conspiracy
In industry, Ferro sulfate solution
is used to decompose residue of hydrogen peroxide or per acids and works
very good. Also a caustic solution will works as log you keep the pH of
solution above 7. In any case you want to add your peroxide solution to
the caustic or Fe+2 and monitor the active oxygen of the mixture
not to concentrate it.
M. Kazemi
Technical Manager
Additives Division
Arkema Inc.
157 Highway Avenue North
Blooming Prairie, Mn 55917
Tel.: 507-583-2427
Fax: 507-583-6648
mohammad.kazemizadeh**At_Symbol_Here**arkema.com
www.arkemagroup.com
"Debbie M. Decker"
<dmdecker**At_Symbol_Here**UCDAVIS.EDU>
Sent by: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**list.uvm.edu>
03/12/2010 05:57 PM
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Hey all you chemists out there! I don't quite
know where to begin to give my colleague, Dexter, advice.
Ideas?
-----Original Message-----
From: Dexter
Debbie
We are using MCPBA to make some epoxides. I need to purify the MCPBA
before I use it and the wash and crystalization process leaves a
significant anoumt in solution. Usually dichloromethane. I will
obviuosly discard this solution as toxic waste but I want to deactivate
the MCPBA that remains. I have read you can use NaI , ferrous ions,
potassium hydroxide, sodium thiosulfate, etc. What in your knowledge
is
the preferred method. Thanks. Dexter
-----------------------------
Debbie M. Decker, Campus Chemical Safety Officer
Environmental Health and Safety
University of California, Davis
1 Shields Ave.
Davis, CA 95616
(530)754-7964/(530)752-4527 (FAX)
dmdecker**At_Symbol_Here**ucdavis.edu
Co-Conspirator to Make the World A
Better Place -- Visit www.HeroicStories.com and join the conspiracy
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