Colorimetric Determination of Hydrogen Peroxide

Abstract

A rapid and accurate colorimetric method for the determination of hydrogen peroxide is described. Beer's law is valid for measurements at 380 to 430 millimicrons. However, in order to obtain conformity to Beer's law throughout any given range of concentration, it is necessary that the cell depth be adjusted to the colorimetric system. A 12.5mm. cell increases the effective range of the method, permitting determination of hydrogen peroxide concentrations ranging from approximately 0.2 to 3.0 mg. per 100 ml. of solution with an average deviation of 0.03. Relatively dark solutions can be diluted without invalidating Beer's law. For maximum color development 1 volume of test reagent per 10 of solution is required. © 1943, American Chemical Society. All rights reserved.