The role of magnesium hydroxide

Magnesium hydroxide, chemical formula Mg (OH) 2, formula 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 that is partially ionized in water, resulting in Mg2+(50%), OH - (8%) (and [MgO2] 2- (or written as [Mg (OH) 4-), and [MgO3] 4- (or written as [Mg (OH) 6] 4-) (42%). We generally refer to hydroxides that are ionized in water as metal cations and hydroxyl complexes, as well as a portion of hydroxide radicals, as moderately strong bases., Magnesium hydroxide with alkaline properties is widely used in industrial fields such as PE, PP, PVC, ABS, PS, HIPS, PA, PBT, unsaturated polyester, epoxy resin, rubber, flame retardant fillers for paints, chemical industry, environmental protection, etc; 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 industries such as rubber, plastics, paint, coatings, and chemical engineering. Active magnesium hydroxide: Active magnesium hydroxide flame retardant, widely used in rubber, chemical industry, building materials, plastics (polypropylene, polyethylene, polyvinyl chloride, ethylene propylene diene rubber), as well as electronic, unsaturated polyester, paint, coatings and other polymer materials, especially for flame retardancy, smoke suppression, and anti-static properties of mining air duct coating cloth, PVC whole core conveyor belt, flame retardant rubber plate, tent cloth, PVC wire and cable material, mining cable sheath, and cable accessories, It can replace aluminum hydroxide and has excellent flame retardancy.