Calcium hydroxide: Calcium hydroxide is an inorganic chemical body, ionic compound of calcium cation and hydroxide anion, with structural formula Ca(OH). This ancient alkali is also called "slaked lime", "fat lime" and "air lime", because this corrosive and hygroscopic powder (*) was prepared from the quicklime or calcium oxide produced in the past by the lime kiln of the lime-burner. It is also a rare natural mineral, with a density of 2,23, called "portlandite"...
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