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Calcium hydroxide is a white chemical compound made from calcium, hydrogen, and oxygen that has many practical uses in industry and construction. It matters because it's commonly used in applications like water treatment, cement production, and soil stabilization, making it an important material in modern infrastructure and environmental management.
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Calcium hydroxide (traditionally called slaked lime) is an inorganic compound with the chemical formula Ca(OH)2. It is a colorless crystal or white powder and is produced when quicklime (calcium oxide) is mixed with water. Annually, approximately 125 million tons of calcium hydroxide are produced worldwide.
Calcium hydroxide has many names, including hydrated lime, caustic lime, builders' lime, slaked lime, cal, and pickling lime. Calcium hydroxide is used in many applications, including food preparation, where it has been identified as E number E526. Limewater and milk of lime are common names for a saturated solution of calcium hydroxide.
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