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 obtained when calcium oxide (called lime or quicklime) is mixed, or "slaked" with water. It has many names including hydrated lime,
C 6478 Calcium hydroxide, ACS grade, 96%+ - used in fresh water treatment to raise the pH of the water thereby controlling the corrosion of pipes.