Date: Tue, 16 Mar 2010 02:14:03 -0400
Reply-To: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: Christopher Suznovich <snuz**At_Symbol_Here**MAC.COM>
Subject: Re: Inactivation of Meta chloro peroxybenzoic acid
In-Reply-To: <62CF6C9F10C1D44DA44CCC3EE395B53F015F656A3E**At_Symbol_Here**>
Assuming peroxybenzoic acid will react the same as peroxyacetic acid, then mixing the peroxybenzoic acid into water will cause it to breakdown into wa ter, carbon dioxide, and n-chlorobenzene, which then needs can be dis posed of by proper means.  

> From: "Nail, John" <jnail**At_Symbol_Here**OKCU.EDU>
> Reply-To: DCHAS-L Discussion List <D CHAS-L**At_Symbol_Here**>
> Date: Sun, 14 Mar 2010 09:46:11 -0500
> To: <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
> Subject: Re: [DCHAS-L] Inactivation of Meta chloro peroxybenzoic acid< BR> >
> Peroxyacids (RCO3H) are strong oxidizers; basically, they react by 'do nating'
> oxygen atoms to reducing agents
> RCO3H + reducing agent --> RCO2H (a carboxylic acid) + Reducing age nt + an O
> atom; further chemistry may occur with the oxidized reducing agent.
> Any decent reducing agent will work; one advantage of using Fe+2 ions, such as
> in ferrous ammonium sulfate, is that the Fe+2 will be oxidized to Fe+3 ; this
> should give a color change which can be used to confirm that the react ion
> occurred.
> To answer the question, there may not be a 'preferred method'; there a re
> dozens of reagents that should work.
> -----Original Message-----
> From: DCHAS-L Discussion List [m ailto:DCHAS-L**At_Symbol_Here**LIST.UVM.EDU] On Behalf Of
> Debbie M. Decker
> Sent: Friday, March 12, 2010 5:57 PM
> To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
> Subject: [DCHAS-L] FW: Inactivation of Meta chloro peroxybenzoic acid< BR> >
> Hey all you chemists out there!  I don't quite know where to begi n 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 M CPBA
> 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 deactivat e
> the MCPBA that remains.  I have read you can use NaI , ferrous io ns,
> potassium hydroxide, sodium thiosulfate, etc.  What in your knowl edge 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=A0 95616
> (530)754-7964/(530)752-4527 (FAX)
> dmdecker**At_Symbol_Here**
> Co-Conspirator to Make the World A
> Better Place -- Visit and join the conspiracy

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