> From: "Nail, John" <jnail**At_Symbol_Here**OKCU.EDU>
> Reply-To: DCHAS-L Discussion List <D
CHAS-L**At_Symbol_Here**list.uvm.edu>
> 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**ucdavis.edu
> Co-Conspirator to Make the World A
> Better Place -- Visit www.HeroicStories.com and join the conspiracy