Potassium chlorate and the oxides of iron were mixed in varying proportions and the spontaneous decomposition temperatures of the mixtures determined. Fe3O4 prepared at high temperatures exerted very little catalytic effect and no rapid evolution occurred below 374 ° in a mixture whose composition was KClO3: Fe3O4:: 1: 1. A monohydrate of Fe3O4 prepared by precipitation was magnetic as precipitated. A 1: 1 mixture of this oxide with KClO3 suffered spontaneous decomposition at 294°. A freshly prepared sample of Fe2O3 was used with KClO3. Spontaneous decomposition occurred at 235°. A sudden evolution of Cl2 occurred at 120°. The Cl2 evolved at 120° was from NH4Cl remaining in the Fe2O3. When iron oxides are heated they lose their catalytic effect on the decomposition of KClO3.
Proceedings of the Iowa Academy of Science
©1924 Iowa Academy of Science, Inc.
Brown, F. E. and White, C. O.
"Spontaneous Decomposition Temperatures of Potassium Chlorate-Iron Oxide Mixtures,"
Proceedings of the Iowa Academy of Science, 31(1), 276-277.
Available at: https://scholarworks.uni.edu/pias/vol31/iss1/55