Reactivity and Hazard Evaluation of Oxidizing Materials(Ⅳ) A Drop Ball Test of Oxidizer-Combustible Mixture~

Abstract

A drop ball machine with variable weight ball was applied for determining the impact sensitivity of oxidizer-combustible mixtures. The observed sensitivities were able to be expressed by the energy (E₅₀) of the 50% explosion height, by using correlations between both E₅₀ of the drop ball and drop hammar tests, the sensitivity order of many oxidizer mixtures was obtained and tabulated. Red phosphorus gives the most sensitive mixture with oxidizers a~nong the combustibles including red phosphorus, sulphur, ethylene giycol, aluminium, magnesil~m and tetraar~enic tetrasulfide.