magnesium hydroxide

Magnesium hydroxide, also known as caustic magnesite, light burned magnesia, etc. the suspension of magnesium hydroxide in water is called magnesium hydroxide emulsion, abbreviated as magnesium emulsion, and its English name is magnesium hydroxide. Magnesium hydroxide is a colorless hexagonal crystal or white powder, which is difficult to dissolve in water and alcohol, soluble in dilute acid and ammonium salt solution, and the aqueous solution is weakly alkaline. The solubility in water is very small, but the part dissolved in water is completely ionized, which is a strong electrolyte (one is a weak electrolyte). The natural mineral brucite of magnesium hydroxide. It can be used to make sugar and magnesium oxide. Because magnesium hydroxide is rich in nature and its chemical properties are similar to aluminum, users began to use magnesium hydroxide instead of aluminum chloride for deodorant products. Chemical formula Mg (OH) 2, formula quantity 58.32. White amorphous powder. Insoluble in water, easily soluble in dilute acid and ammonium salt solution. The concentration of saturated aqueous solution is 1.9 mg / L (18 ℃), which is alkaline. When heated to 350 ℃, the water is lost to form magnesium oxide. It is used as analytical reagent and also in pharmaceutical industry. Magnesium hydroxide can be obtained by reacting magnesium oxide with water.