Calcium hypochlorite, Ca(ClO), is an oxysalt; it is crystalline solid and an oxidizer that decomposes at 212 F(100C). Calcium hypochlorite is a dangerous fire risk in contact with organic materials. It is also a common swimming pool chlorinator and decomposes in contact with water, releasing chlorine in to the water. If a container of Calcium hypochlorite becomes wet in storage, the result can be an exothermic reaction. If combustible materials are present, a fire may occur. The chlorine in the compound with be released by contact with the water will than accelerate the combustion process.