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DCHAS-L Discussion List Archive


Date: Thu, 9 Apr 2009 08:29:23 -0400
Reply-To: "Samuella B. Sigmann" <sigmannsb**At_Symbol_Here**APPSTATE.EDU>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: "Samuella B. Sigmann" <sigmannsb**At_Symbol_Here**APPSTATE.EDU>
Subject: Re: Mixtures of Oleum and Perchloric acid
Comments: To: Little Helga
In-Reply-To: <B478FE90ACFE421EBA0487FEAA0FCD92**At_Symbol_Here**yourfsyly0jtwn>

Hi Bob - Here is the link to the prediction at Cameo Chemicals where you can "virtually mix" the two.

http://cameochemicals.noaa.gov/reactivity#Pair_1

Sammye

Little Helga wrote:

Does anyone know of a potential hazard of mixing 70% perchloric acid with oleum (% SO3 to react with most of the water in the perchloric acid).
 
The research group is trying to make ~100% sulfuric acid and ~100% perchloric acid to oxidize small quanities of carbon (graphite) at temperatures ranging up to 70 C. The group understands the usual problems with handling oleum and they know that 100% perchloric acid by its self is a major safety problem.
 
Concentrations of the "100% perchloric acid" would be in the range of 10 to 30% in the oleum.
 
Bob Small
RS Associates
Tucson, AZ
 

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Don’t always believe what you think.

Samuella B. Sigmann, NRCC-CHO

Lecturer/Safety Committee Chair

A. R. Smith Department of Chemistry

Appalachian State University

525 Rivers Street

Boone, NC   28608

Phone: 828 262 2755

Fax: 828 262 6558

Email: sigmannsb**At_Symbol_Here**appstate.edu

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