Magnesium Oxide 65

Magnesium oxide

Commonly known as: bitter soil powder light burnt magnesium powder

Molecular formula: MgO

Molecular weight: 40.30

CAS NO.: 1309-48-4

Physical Properties: White light powder, odorless, tasteless, insoluble in water and ethanol, melting point 2852 C, boiling point 3600 C, magnesium oxide has a high refractory insulation performance. It can be transformed into crystals by high temperature burning above 1000 C and sintered magnesia or sintered magnesia when it rises above 1500 C.

Chemical Properties: Magnesium oxide is an alkaline oxide with the general properties of alkaline oxide.

Exposed to air, it is easy to absorb water and carbon dioxide and gradually become basic magnesium carbonate. Light products are faster than heavy products, and combine with water to form magnesium hydroxide, which is slightly alkaline. The pH of saturated water solution is 10.3. Soluble in acid and ammonium salt, insoluble in water, its solution is alkaline. It is insoluble in ethanol.

MgO+2HCl===MgCl2+H2O

MgO+NH4Cl====MgCl2+NH3+2H2

Slow interaction with water to form magnesium hydroxide

It has strong refractivity in the visible and near-ultraviolet light range.

Classification: Light magnesium oxide and heavy magnesium oxide. Light bulk, white amorphous powder. It is odorless, tasteless and non-toxic. The density was 3.58 g/cm 3. It is insoluble in pure water and organic solvents, and its solubility in water increases with the presence of carbon dioxide. It can dissolve in acid and ammonium salt solution. It is transformed into crystals by high temperature burning. When exposed to carbon dioxide in the air, magnesium carbonate compound is formed. Heavy compact, white or beige powder. It is easy to combine with water and absorb water and carbon dioxide in exposed air. It is easy to gel and harden when mixed with magnesium chloride solution.

Application: It is a method for the determination of sulfur and arsenic in coal, pyrite and steel. Standard for white pigments. Lightweight magnesium oxide is mainly used as raw materials for making ceramics, enamels, refractory crucibles and refractory bricks. It is also used as a polishing agent, adhesives url], fillers for paper, accelerators and activators for chloroprene rubber and fluororubber. After mixing with magnesium chloride and other solutions, magnesium oxide can be prepared for water regulation. It is used in medicine as an antacid and laxative, in gastric acid excess and gastrointestinal ulcer, and in chemical industry as a catalyst and raw material for making magnesium salt. It is also used for glazing, dyeing meal, phenolic plastics and so on. Heavy Magnesium Oxide is used for grinding and semi-roller in rice milling industry. The construction industry is used to make artificial chemical floor, artificial marble heat-proof board, sound-proof board, plastic industry as filling material. It can also be used to produce other magnesium salts.

Mainly used in the preparation of oral medicines to neutralize excessive gastric acid. Commonly used preparations are: magnesium emulsion - emulsion; magnesium cover tablet - each tablet contains 0.1g of MgO; acid powder - powder made by mixing magnesium oxide and sodium bicarbonate, etc.

Properties: White light powder, tasteless, exposed to air, easy to absorb water and carbon dioxide, this product is soluble in acid and ammonium salt, insoluble in water and ethanol, melting point 2800, boiling point 3600, magnesium oxide has a high fire-resistant insulation performance. (High melting point)

Usage: Magnesium oxide is a flexural, compressive, high strength, pneumatic, cementitious material, widely used in national defense, medicine, chemical industry, papermaking, shipbuilding and other industries. In the building material industry, it can be made into tyre boards, particleboard, thermal insulation columns, railings, artificial marble, asbestos tiles, ordinary tiles, wallboards and paving floors. With the progress of science and technology, magnesium oxide is widely used in biogas tanks, greenhouse brackets, crafts, firecrackers, fireproof boards and other products.