bleaching powder


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bleaching powder,

white or nearly white powder that is usually a mixture of calcium chloride hypochlorite, CaCl(OCl); calcium hypochlorite, Ca(OCl)2; and calcium chloride, CaCl2. Sometimes called chloride of lime, it can be prepared by reacting calcium hydroxide or slaked lime, Ca(OH)2, with chlorine gas, Cl2. It is used as a strong bleaching agent, as a disinfectant, and in making Javelle waterJavelle water
or Javel water
, Fr. eau de Javelle, aqueous solution of sodium or potassium hypochlorite. It was originally made near the French town of Javelle (now part of Paris) and was the first chemical bleach, a use first demonstrated by C. L.
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. Bleaching powder was first produced in 1799 by Charles Tennant in Glasgow, Scotland.

bleaching powder

[′blēch·iŋ ‚pau̇d·ər]
(materials)
A mixture of calcium hydroxide, calcium chloride, and calcium hypochlorite that is used as a bleaching agent. Also known as chloride of lime; chlorinated lime.

bleaching powder

a white powder with the odour of chlorine, consisting of chlorinated calcium hydroxide with an approximate formula CaCl(OCl).4H2O. It is used in solution as a bleaching agent and disinfectant
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Atsushi Doi, the head of the Tosa plant, said the explosion occurred during the process of transferring heated bleaching powder into a holding tank, which he said blew up for reasons yet to be determined.
Tenders are invited for Supply and delivery of 35% chlorine content stable bleaching powder ( modi, vikram and rayalaseema) of isi grade i to municipal stores for maintenance of water supply in sircilla town.
Tenders are invited for Supply & Delivery of bleaching powder to dharmavaram drinking water supply scheme in dharmavaram municipality
Tenders are invited for Supply of Bleaching Powder confirming to specification no-BIS 1065-1989 (Latest Revision)