发表时间:2022-07-04
Magnesium hydroxide precipitation is white.
Magnesium hydroxide is a white amorphous powder. It is also called caustic magnesite, light burned magnesia, etc. the suspension of magnesium hydroxide in water is called magnesium hydroxide emulsion, or magnesium emulsion for short. Magnesium hydroxide is a colorless hexagonal crystal or white powder, which is insoluble 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. The concentration of saturated aqueous solution is 1.9 mg / L (18 ℃). When heated to 350 ℃, water will be lost to form magnesium oxide. 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 fragrance products. It is used as analytical reagent and also in pharmaceutical industry.