Magnesium oxide

              Magnesium oxide,Magnesia usta,Calcined magnesia,Magcal,Maglit

              Sealed dry preservation.

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              Characteristics

              White fine powder. No smell. Due to different preparation methods, there are light magnesium oxide and heavy  magnesium oxide. Strong refraction in visible and near ultraviolet light. Exposed air is easy to absorb water and carbon dioxide and gradually become alkali magnesium carbonate. Light  magnesium oxide is faster than heavy  magnesium oxide to combine with water to form magnesium hydroxide, which is slightly alkaline and the PH of the saturated aqueous solution is 10.3. However, it is easily soluble in dilute acid and slightly soluble in pure water, and its solubility is increased by the presence of carbon dioxide. Insoluble in ethanol. Relative density is (d254)3.58.Melting point is 2852 ℃.The boiling point is 3600 .

              Effect

              Used for rubber, plastics, wire, cable dyes, paint, glass, ceramics, chemical reagents, medicine, food additives, etc.

              Application

              Determination of sulfur in coal and sulfur, arsenic in  pyrite and steel. Used as a standard for white pigments. Light magnesium oxide is mainly used as raw material for ceramic, enamel, refractory crucible and refractory brick. Also used as polish, adhesive, also as coating and paper filler. Used as  promoter and activator for neoprene and fluorine rubber. Mixed with magnesium chloride and other solutions, can be made into magnesium oxide water adjustment. It is used in medicine as antacid and laxative, and as catalyst and raw material for making magnesium salt in chemical industry. It is also used in the manufacture of glass, dyestuff and phenolic plastics. Heavy magnesium oxide is used in the rice milling industry for firing grinders and half-rollers. The construction industry is used for making artificial chemical flooring, artificial marble, heat proof board, soundproof board. In plastic industry is used for filling material. It can also be used to produce other magnesium salts.
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