Magnesium hydroxide is alkaline in acid and alkali salts. It is difficult to dissolve in water, and the aqueous solution is weakly alkaline, but the part dissolved in water is completely ionized.


Magnesium hydroxide (chemical formula: Mg (OH) 2) is a kind of magnesium hydroxide, which is white crystal or powder and insoluble in water. It is widely used as flame retardant, anti acid agent and stomach acid neutralizer.


The suspension of magnesium hydroxide in water is called magnesium hydroxide emulsion. Magnesium hydroxide is insoluble in water and alcohol, but soluble in dilute acid and ammonium salt solution. The aqueous solution is weakly alkaline. The solubility in water is very small, but the part dissolved in water is completely ionized.