calcium-oxychloride

calcium oxychloride

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bleaching powder

noun Chemistry.
a white powder that decomposes on contact with water and has the characteristic odor of gaseous chlorine: regarded, when dry, as a mixed calcium hypochlorite-chloride, used as a commercial bleach for wood pulp, textiles, oils, and soaps, and in laundering as a decolorizer and disinfectant.
Also called chloride of lime, chlorinated lime, calcium oxychloride.


Origin:
1850–55

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
bleaching powder
 
n
chloride of lime, Also called: chlorinated lime 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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