The suspension of magnesium hydroxide in water is called magnesium hydroxide emulsion, referred to as magnesium milk. Magnesium hydroxide is a colorless hexagonal column crystal or white powder, hardly soluble in water and alcohol, soluble in dilute acid and ammonium salt. The solution, the aqueous solution is alkaline. The solubility in water is small, and high school students think it is a weak electrolyte. Natural mineral brucite of magnesium hydroxide. Can be used in sugar and magnesium oxide.