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calcium hydroxide

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calcium hydroxide

White solid, slightly soluble in water. A solution of calcium hydroxide is called limewater and is used in the laboratory to test for the presence of carbon dioxide.

It is manufactured industrially by adding water to calcium oxide (quicklime) in a strongly exothermic reaction:

CaO + H2O → Ca(OH)2

It is used to reduce soil acidity and as a cheap alkali in many industrial processes.


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The two acid acceptors commonly used in FKM compounding are calcium hydroxide and high activity magnesium oxide.
District 1 officials said the opened and unopened bottles of hydrochloric acid, ethyl alcohol and calcium hydroxide included in unused seventh-grade science kits were thrown out by someone in the nearby Sciences Resource Laboratory.
Tropicana said, "The source of the calcium in our products is calcium hydroxide.
 
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