Assuming peroxybenzoic acid wil l react the same as peroxyacetic acid, then mixing the peroxybenzoic acid into water will ca use it to breakdown into water, carbon dioxide, and n-chlorobenzene, whi ch then needs can be disposed of by proper means.  


> From: "Nai l, John" <jnail**At_Symbol_Here**OKCU.EDU>
> Reply-To: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**list.uvm.edu>
> Date: Sun, 14 Mar 2010 09:46:11 -0500
> To: <DC HAS-L**At_Symbol_Here**LIST.UVM.EDU>
> Subject: Re: [DCHAS-L] Inactivation of Meta chloro peroxybenzoic acid
>
> Peroxyacids (RCO3H) are strong oxidizers; basically, they react by 'donating'
> oxygen atoms to reducing agents
>
> RCO 3H + reducing agent --> RCO2H (a carboxylic acid) + Reducing agent + an O
> atom; further chemistry may occur with the oxidized reducing agent.
>
> Any decent reducing agent will work; one advanta ge 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 reaction
> occurred.
>
> To answer the question, there may not be a 'preferred method'; there are
> dozens of reagents that should work.
>
> -----Orig inal Message-----
> From: DCHAS-L Discussion List [mailto: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
>
> 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 disca rd this solution as toxic waste but I want to deactivate
> the MCPBA that remains.  I have read you can use NaI , ferrous ions,
> pota ssium 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