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calcium hypochlorite basic information |
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calcium hypochlorite chemical properties |
mp |
100 °c(lit.) |
density |
2.35 g/ml at 25 °c(lit.) |
storage temp. |
store at rt. |
water solubility |
200 g/l (20 ºc) (dec.) |
merck |
14,1674 |
stability: |
stability strong oxidizer - contact with flammable material may lead to fire. incompatible with water, reducing agents, combustible material, phenol. |
cas database reference |
7778-54-3(cas database reference) |
epa substance registry system |
hypochlorous acid, calcium salt(7778-54-3) |
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calcium hypochlorite usage and synthesis |
chemical properties |
white powder with a chlorine-like odour |
general description |
calcium hypochlorite, hydrated is a white granular solid or tablets compressed from the granules having an odor of chlorine. calcium hypochlorite is noncombustible, but calcium hypochlorite will accelerate the burning of combustible materials. calcium hypochlorite is decomposed by water with evolution of chlorine gas and heat. prolonged exposure to fire or heat may result in the vigorous decomposition of the material and rupture of the container. material containing less than 39% available chlorine may undergo reactions as described above though calcium hypochlorite may take longer to initiate, and the resulting reactions may not be as vigorous. calcium hypochlorite is used for water purification, disinfectant for swimming pools, for bleaching paper and textiles, and for many other uses. |
reactivity profile |
calcium hypochlorite is a powerful oxidizing agent, particularly in the presence of water or at higher temperature as calcium hypochlorite decomposes to release oxygen and chlorine gases. as strong oxidant calcium hypochlorite may react with vigor in combination with carbon, especially finely divided is explosive; acetylene, leads to creation of explosive chloroacetylenes; organic matter, oil, hydrocarbons; alcohols may cause explosion, methanol, ethanol, etc.; nitromethane caused delayed violent reaction; organic sulfur compounds, sulfides tend toward ignition and sometimes explosion; with iron oxide in metal containers catalyze oxygen evolving decomposition of the oxidant. calcium hypochlorite forms highly explosive ncl3 on contact with urea. produces highly toxic gaseous chlorine gas when heated or on contact with acids [sax, 9th ed., 1996, p. 1905]. mixture of damp sulfur with hypochlorite caused a violent reaction, that ejected molten sulfur, chem eng. news, 1965, 46(29), 6. |
health 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. |
fire hazard |
these substances will accelerate burning when involved in a fire. some may decompose explosively when heated or involved in a fire. may explode from heat or contamination. some will react explosively with hydrocarbons (fuels). may ignite combustibles (wood, paper, oil, clothing, etc.). containers may explode when heated. runoff may create fire or explosion hazard. |
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calcium hypochlorite preparation products and raw materials |
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