MadSci Network: Chemistry

Re: Does anyone know a protocol for the titration of benzoyl peroxide

Date: Sat Feb 24 20:55:24 2001
Posted By: Xianlong Wang, Grad student, Chemistry, Nanjing University
Area of science: Chemistry
ID: 980810650.Ch

Mori et al reported a highly sensitive spectrophotometric determination of 
benzoyl peroxide (BPO) based on the color developing reaction between 
N,N,N',N'-tetramethyl-p-phenylenediamine (TMPD) and BPO in the presence of 
Ce(IV) in weakly acidic media. In their report, the calibration graph is 
linear in the range 0-6000 ng BPO per 10 mL with an apparent molar 
absorptivity of 4.73 E+05 l/(mol cm) at 612 nm. The proposed method is ~50-
fold more sensitive than N-ethyl-2-naphthylamine (NENA), and application 
to assays of flour is described.

For detailed procedure, please see their paper. 
Anal. Lett., 30(13), 2433-2439(English) 1997 Dekker

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