Calcium Hypochlorite

Calcium Hypochlorite

Name: calcium hypochlorite
Other names: hypochlorous acid, calcium salt, bleaching powder
CAS number: 7778-54-3
Other names: Calciumhypochloritetech; Bleaching powder; hypochlorous acid; calcium dihypochlorite
Molecular formula: Ca(ClO)2
Molar mass: 142.98 g/mol
Melting point: 100 °C
Boiling point: 175 °C, decomposes
Solubility in water: 21g/100 mL, reacts

Bleaching powder is a white or gray powder that decomposes on contact with water and has the characteristic odor of gaseous chlorine. When dry, it is a mixture of calcium hypochlorite and the basic chloride CaCl2, H2O with some slaked lime, Ca(OH)2. It is used for wood pulp, textiles, oils, and soaps, and in laundering as a decolorizer and disinfectant.

Calcium hypochlorite is the main ingredient, which is considered to be relatively stable. It is an effective public health biocide registered for numerous sanitization applications by the U.S. EPA under the Federal Insecticide, Fungicide, and Rodenticide Act, and supported under the European Biocidal Products Directive.

Calcium hypochlorite is a chlorine source, when mixed with water forms hypochlorous acid and calcium hydroxide. The hypochlorous form is used for public health treatments such as the sanitization of drinking water, sewage, waste water, swimming pools and spas, industrial fruit and vegetable washing; and surface sanitization of meat and poultry plants.

Calcium hypochlorite is an effective sanitizer used for a variety of purposes. It is a proven, powerful germicide capable of controlling pathogenic and nuisance microorganisms like bacteria, fungi and algae. This feature makes it used in many fields. Calcium hypochlorite is also used at higher concentrations to deodorize and remove organic contaminants. Once dissolved in pool water, calcium hypochlorite will cause no harm to the bathers in the water and actually protects bathers from harmful waterborne pathogens. The potential for absorption of calcium hypochlorite by the body is very low. However, if it is absorbed, it is excreted rapidly with no potential for bioaccumulation.

During production, the whole process is tightly controlled and confined through strong industrial hygiene protocols and processes, engineering of the manufacturing equipment, and the use of personal protective equipment.

Calcium hypochlorite must be stored under seal in a cool, dry, well ventilated place. It is a strong oxidizing agent, and it must be kept away from heat, flame, and burning material.

Related Names
Chemical Compound | Chlorinated Lime | Hichlon | Bleaching Powder

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