- is a chemical compound with the chemical formula Ca(OH)2
. It is a colorless crystal or white powder, and is created when calcium oxide (called lime
) is slaked with water . It can also be created by mixing an aqueous solution of calcium chloride and an aqueous solution of sodium hydroxide. Other names for hydrated lime is calcium hydroxide
, or slaked lime
If heated, it decomposes into calcium oxide and water. A suspension of fine calcium hydroxide particles in water, called lime water (or milk of lime), is a medium strength base that reacts violently with acids and attacks many metals in presence of water.