... soluble in acids and ammonium salt solution. When calcine easy to decompose the magnesia and the carbon dioxide.7,Meets the ... magnesium hydroxide (, because magnesium hydroxide is more difficult than magnesiumcarbonate to dissolve). Use:1, Serves as the medicine intermediate, the absorbent, the ... , boiler manufacture.8,And the athlete competes scratches the hand to use. Heavy Magnesium Carbonate