1. Magnesium hydroxide is an excellent flame retardant for plastics and rubber products. As a desulfurizer of flue gas, it can replace caustic soda and lime as neutralizer of acid containing wastewater. 

2. Chemical book is also used as oil additive to prevent corrosion and desulfurization. In addition, it can also be used in electronics industry, medicine, sugar refining, as insulation materials and manufacturing other magnesium salt products.