Role of Magnesium hydroxide

Magnesium hydroxide, chemical formula Mg (OH) 2, formula amount 58.32. White amorphous powder. Hardly soluble in water, easily soluble in dilute acid and ammonium salt solutions. The concentration of the saturated aqueous solution is 1.9 mg/L (18 ℃), which is alkaline. Heat to 350 ℃ to lose aquatic magnesium oxide. Used as an analytical reagent and also in the pharmaceutical industry. Magnesium hydroxide can be obtained by reacting magnesium oxide with water.
Chemical properties: It decomposes into magnesium oxide at 380 ℃. It is a moderately strong base, and the part dissolved in water is completely ionized to produce Mg2+(50%), OH - (8%) (and [MgO2] 2- (or write [Mg (OH) 4] 2-) and [MgO3] 4- (or write [Mg (OH) 6] 4-) (42%). We generally call the hydroxides dissolved in water ionized into metal cations and hydroxyl complexes and a part of Hydroxide ion as moderately strong bases., General use of alkali Magnesium hydroxide is widely used in PE, PP, PVC, ABS, PS, HIPS, PA, PBT, unsaturated polyester, epoxy resin, rubber, flame retardant filler for paint, chemical industry, environmental protection and other industrial fields; Excellent flame retardants and fillers for polymer materials such as plastics and rubber. In terms of environmental protection, they serve as flue gas desulfurization agents and can replace caustic soda and lime as neutralizing agents for acidic wastewater; Used as an oil additive for corrosion prevention and desulfurization; Used for refining in the electronics industry, pharmaceuticals, and sugar; Used for insulation materials and manufacturing other magnesium salt products. Ordinary Magnesium hydroxide: used in rubber, plastic, paint, coating, chemical and other industries. Active Magnesium hydroxide: active Magnesium hydroxide flame retardant, widely used in rubber, chemicals, building materials, plastics (polypropylene, polyethylene, polyvinyl chloride, EPDM rubber), electronics, unsaturated polyester, paints, coatings and other polymer materials, especially for flame retardant, smoke suppression and antistatic coating cloth for mine air duct, PVC whole core transport belt, flame retardant rubber sheet, tarpaulin, PVC wire and cable material, mine cable sheath, cable accessories, It can replace Aluminium hydroxide and has excellent flame retardant effect.