Calcium Hypochlorite

CAS:  7778-54-3

Synonyms:    Hypochlorous acid calcium salt; bleaching powder

Uses:    Algicide; bactericide; deodorant; potable-water purification; disinfectant for swimming pools; fungicide; bleaching agent (paper, textiles)

Hazard:    Inhalation, ingestion or contact (skin, eyes) with vapors or substance may cause severe injury, burns or death.  Fire may produce irritating, corrosive and/or toxic gases.  Runoff from fire control or dilution water may cause pollution.  CALCIUM HYPOCHLORITE is a powerful oxidizing agent, particularly in the presence of water or as it decomposes when heated to release oxygen and chlorine gases. May react vigorously with carbon; reacts potentially explosively with finely divided carbon. Reacts with acetylene to form explosive chloroacetylenes. Reactions with organic matter, oil, hydrocarbons; alcohols may lead to explosions. Reactions with nitromethane, methanol, ethanol (and other alcohols) can become violent after a delay. Reacts with possible ignition and/or explosion with organic sulfur compounds and with sulfides.  Decomposes evolving oxygen, a change that can be catalyzed by rust on metal containers. Forms highly explosive NCl3  on contact with urea or ammonia. Evolves highly toxic gaseous chlorine gas when heated or on contact with acids. A mixture with damp sulfur reacted violently, and molten sulfur was ejected.  The combination of calcium hypochlorite, sodium hydrogen sulfate, starch, and sodium carbonate, when compressed, caused the materials to incandescence, followed by explosion