The role of 70-80% perchloric acid as oxygen donor and the oxidation potentials made available.
A study has been made of the probable oxidation potentials provided by perchloric acid in the concentration range 70-80 %. The effect of acid concentration and temperature on the oxidation of chromium, vanadium, cerium, and manganese has been investigated. Available oxidation potentials appear to be 2.0-2.1 V or higher. The monohydrate of perchloric acid, HClO(4).H(2)O, containing 84.6% of perchloric acid, has been made commercially available and authorized for distribution by common carrier. It can be diluted to give acid concentrations from 73.6% (corresponding to HClO(4).2H(2)O) upwards. Perchloric acid mixed with sulphuric acid is equivalent to high concentrations of perchloric acid and can be used for dissolution of ores and destruction of organic matter.
Smith
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Noyes Chemical Laboratories, University of Illinois, Urbana, Illinois, U.S.A.