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Calcium hypochlorite is an inorganic compound with chemical formula Ca(Cl O) 2, also written as Ca(OCl) 2.It is a white solid, although commercial samples appear yellow. It strongly smells of chlorine, owing to its slow decomposition in moist air.
Percent active chlorine in these materials ranges from 20% for bleaching powder to 70% for HTH. Potassium hypochlorite, KOCl. This was the first chlorine-based bleaching agent, which became available around 1785 under the name Eau de Javel or "Javel water". It is no longer commonly used, having been superseded by the cheaper sodium analog.
The hypochlorite can be in the form of a powder or a liquid such as chlorine bleach (solution of sodium hypochlorite or calcium hypochlorite in water). Water that is being shock chlorinated should not be swum in or drunk until the sodium hypochlorite count in the water goes down to three parts per million (ppm) or until the calcium hypochlorite ...
Hypochlorites, especially of sodium ("liquid bleach", "Javel water") and calcium ("bleaching powder") are widely used, industrially and domestically, to whiten clothes, lighten hair color and remove stains. They were the first commercial bleaching products, developed soon after that property was discovered in 1785 by French chemist Claude ...
The powder was made from chlorine and slaked lime and became known as Tennant's bleaching salt. [14] It was produced by mixing 4 parts of water, 4 + 1 ⁄ 2 parts salt, 2 parts of manganese and 4 parts of sulfuric acid known as "vitriol" in a lead vessel heated in a water bath. [14] The powder sold well and this enabled the factory to expand ...
Bleaching powder (formerly known as "chlorinated lime"), usually a mixture of calcium hypochlorite (Ca(ClO) 2), calcium hydroxide (slaked lime, Ca(OH) 2), and calcium chloride (CaCl 2) in variable amounts. [18] Sold as a white powder or in tablets, it is used in many of the same applications as sodium hypochlorite but is more stable and ...