Accession Number : AD0615036

Title :   STABILITY OF HIGH STRENGTH H2O2.

Descriptive Note : Quarterly rept. no. 2 for period ending 31 Mar 65.

Corporate Author : DU PONT DE NEMOURS (E I) AND CO WILMINGTON DEL ELECTROCHEMICALS DEPT

Report Date : 31 MAR 1965

Pagination or Media Count : 51

Abstract : A series of stability tests on samples of commerical ('stabilized') 90% and 98% hydrogen peroxide at -60C., -30C., and OC., in Pyrex glass, was completed. It is concluded that present commercial grades of 98% and some commercial grades of 90% hydrogen peroxide, maintained at OC. or below, can be considered stable and storable (decomposition rates below 1=0.5 ppm/day). A detailed analysis of previous studies of the mechanism of catalytic decomposition of hydrogen peroxide was completed, and used to formulate a coherent series of reaction steps for such decompositions. Electron paramagnetic resonance studies were carried out in a rapid flow mixing chamber in order to determine the rate constants for some dozen initiation and propagation reactions of these highly transient intermediate species. Attenuated total reflectance measurements were made on a perfluorosulfonic acid ion exchange membrane exposed to 90% hydrogen peroxide at 70C. Definite attack on the membrane was shown in a two hour period, indicating that not all perfluoro organic compounds are inert to 90% hydrogen peroxide.

Descriptors :   (*OXIDIZERS, STABILITY), (*HYDROGEN PEROXIDE, STABILITY), DECOMPOSITION, ELECTRICAL CONDUCTIVITY, REACTION KINETICS, CHEMICAL EQUILIBRIUM, NUCLEAR MAGNETIC RESONANCE, PHOTOCHEMICAL REACTIONS, ION EXCHANGE RESINS, FLUORINE COMPOUNDS, SULFONATES, COMPATIBILITY

Distribution Statement : APPROVED FOR PUBLIC RELEASE