Chemical name: magnesium hydroxide
Molecular formula: Mg(OH)2
Molecular weight: 58.32
English name: Magnesium hydroxide
Physical properties: colorless hexagonal crystal, density 2.36, insoluble in water
Chemical properties: Magnesium oxide is decomposed at 350 ~C.
Medium strong alkali, partially ionized in water (sometimes considered weak alkali), with alkali generality.
Purpose:
Magnesium hydroxide is widely used in PE, PP, PVC, ABS, PS, HIPS, PA, PBT, unsaturated polyester, epoxy resin, rubber, paint flame retardant filler, chemical industry, environmental protection and other industrial fields; used in plastics, rubber and other polymer materials, excellent flame retardant and filler, in environmental protection as flue gas desulfurizer, can replace burning. Alkali and lime are used as neutralizers for acid-containing wastewater, as additives for oil products, as anticorrosive and desulfurizing agents, as refining agents for electronics, medicine and sugar, as thermal insulation materials and other magnesium salts.
Common magnesium hydroxide: used in rubber, plastics, paint, paint, chemical industry and other industries.
Active Magnesium Hydroxide: Active Magnesium Hydroxide Flame Retardant is widely used in rubber, chemical industry, building materials, plastics (polypropylene, polyethylene, polyvinyl chloride, ethylene propylene terpolymer rubber) and electronic, unsaturated polyester, paints, coatings and other macromolecule materials, especially coated cloth for mine air duct, PVC whole core conveyor belt, flame retardant. Rubber board, canvas, PVC wire and cable material, mine cable sheath, cable accessories of flame retardant, smoke suppression and antistatic, can replace aluminium hydroxide, with excellent flame retardant effect.
Appearance: White crystal or powder.
Packaging: The product is packed in composite paper bags and plastic film bags with a net weight of 25 kg per bag.
Handling and Storage: Light handling and light handling, sealed storage, do not be damp.
Physicochemical properties: white crystals or powders. The aqueous solution is alkaline. 2.36g/cm3. Soluble in dilute acid and ammonium salt solution, almost insoluble in water and alcohol. The solubility in water is 0.0009g/100g (18 C). Easy to absorb carbon dioxide in the air. When heated in alkaline solution above 200 C, it becomes hexagonal crystal system. Magnesium oxide hydrates by decomposition at 350 C. When the temperature is higher than 500 C, the loss of water transforms into magnesium oxide. Magnesium carbonate in boiling water can be converted into magnesium hydroxide with worse solubility. The particle size is 1.5-2 micron, the number of eyes is 10,000, and the whiteness is more than 95.