[citation needed] In theory, electrolysis of hot calcium chloride solution will produce the chlorate salt,[citation needed] analogous to the process used for the manufacture of sodium chlorate.

In practice, electrolysis is complicated by calcium hydroxide depositing on the cathode, preventing the flow of current.

[2] Solutions of calcium chlorate react with solutions of alkali carbonates to give a precipitate of calcium carbonate and the alkali chlorate in solution: On strong heating, calcium chlorate decomposes to give oxygen and calcium chloride: Cold, dilute solutions of calcium chlorate and sulfuric acid react to give a precipitate of calcium sulfate and chloric acid in solution:[3] Contact with strong sulfuric acid can result in explosions[4] due to the instability of concentrated chloric acid.

Calcium chlorate is occasionally used in pyrotechnics,[citation needed] as an oxidizer and pink flame colorant.

Its hygroscopic nature and incompatibility with other common pyrotechnic materials (such as sulfur) limit its utility in these applications.