What is magnesium oxide? What is the role of magnesium oxide?

Magnesium oxide is an inorganic substance with a chemical formula of MgO. It is an oxide of magnesium and an ionic compound. It is a white solid at room temperature. Magnesium oxide exists in nature in the form of periclase and is a raw material for smelting magnesium.

Magnesium oxide properties

Magnesium oxide is an alkaline oxide, which has the same properties as alkaline oxides, and is a gelling material. It is white or off-white powder, odorless, tasteless, and non-toxic. It is a typical alkaline earth metal oxide with the chemical formula MgO. The melting point is 2852°C, the boiling point is 3600°C, and the density is 3.58g/cm3 (25°C). Soluble in acid and ammonium salt solution, insoluble in alcohol. The solubility in water is 0.00062 g/100 mL (0 °C) and 0.0086 g/100 mL (30 °C). When exposed to the air, it easily absorbs water and carbon dioxide and gradually becomes basic magnesium carbonate. Light products are faster than heavy products. It combines with water to form magnesium hydroxide under certain conditions, showing a slightly alkaline reaction, and the pH of a saturated aqueous solution Is 10.3. It is soluble in acid and ammonium salt and hardly soluble in water, and its solution is alkaline. Insoluble in ethanol. It has strong refraction in the visible and near-ultraviolet range. Magnesite (MgCO3), dolomite (MgCO3·CaCO3) and sea water are the main raw materials for the production of magnesium oxide. Thermal decomposition of magnesite or dolomite obtains magnesium oxide. Treat seawater with slaked lime to get magnesium hydroxide precipitation, and burn magnesium hydroxide to get magnesium oxide. It is also possible to use the magnesium chloride halide obtained in the comprehensive utilization of seawater or the brine after bromine extraction as raw materials, add sodium hydroxide or sodium carbonate, etc. to produce magnesium hydroxide or basic magnesium carbonate precipitation, and then burn to obtain magnesium oxide. China mainly uses magnesite, dolomite, brine or brine as raw materials

Magnesium oxide product types

Classification: There are two kinds of light magnesium oxide and heavy magnesium oxide. Lightweight and bulky, it is white amorphous powder. Odorless, tasteless and non-toxic. The density is 3.58g/cm3. It is hardly soluble in pure water and organic solvents, and its solubility in water increases due to the presence of carbon dioxide. It can be dissolved in acid and ammonium salt solution. It is converted into crystals after high temperature burning. In case of carbon dioxide in the air, magnesium carbonate double salt is formed. The heavy matter is compact in volume and is white or beige powder. It is easy to combine with water, and it is easy to absorb moisture and carbon dioxide in the exposed air. It is easy to gel and harden when mixed with magnesium chloride solution.

With the upgrading of industrialization and the demand and development of the high-tech functional material market, a series of high-tech and fine magnesium oxide products have been developed and produced, which are mainly used for high-grade lubricants, high-grade tanned leather, alkali-extracting grades, food grades, medicines, silicon steel grades, and advanced grades. It is composed of nearly ten varieties including electromagnetic grade and high-purity magnesium oxide.

Overview of magnesium oxide MgO

Magnesium Oxide MgO is an alkaline oxide with the same properties as alkaline oxide. It is a gelling substance, white or off-white powder, odorless, tasteless, and non-toxic. It is a typical alkaline earth metal oxide chemical formula MgO. The melting point is 2852°C, the boiling point is 3600°C, and the density is 3.58g/cm3 (25°C). Soluble in acid and ammonium salt solution, insoluble in alcohol. The solubility in water is 0.00062g/100 mL (0 °C) and 0.0086 g/100 mL (30 °C). It is easy to absorb water and carbon dioxide when exposed to the air, and gradually becomes basic magnesium carbonate. Light products are faster than heavy products. It combines with water to form magnesium hydroxide under certain conditions, showing a slightly alkaline reaction. The pH of the saturated aqueous solution is 10.3. It is soluble in acid and ammonium salt, but hardly soluble in water, and its solution is alkaline. Insoluble in ethanol. It has strong refraction in the visible and near-ultraviolet range. Magnesite (MgCO3), dolomite (MgCO3•CaCO3) and sea water are the main raw materials for the production of magnesium oxide. Magnesite or dolomite undergoes thermal decomposition to obtain magnesium oxide. Treating seawater with slaked lime to obtain magnesium hydroxide precipitation, and burning magnesium hydroxide to obtain magnesium oxide can also take the magnesium halide obtained by comprehensive utilization of seawater or brine extracted from bromine as raw materials, adding sodium hydroxide or sodium carbonate, etc. The magnesium hydroxide or basic magnesium carbonate is precipitated and then burned to obtain the magnesium chloride obtained by comprehensively using seawater or bromine extraction brine as a raw material, adding sodium hydroxide or sodium carbonate. The magnesium hydroxide or basic magnesium carbonate is precipitated, and then it is obtained by burning. It is also possible to use the magnesium halide obtained from the comprehensive utilization of seawater or the brine after bromine extraction as the raw material, and sodium hydroxide or sodium carbonate, etc. can be added. Generate magnesium hydroxide or basic magnesium carbonate precipitation, and then burn to obtain magnesium oxide. China mainly uses magnesite, dolomite, brine or brine as raw materials.

Application of magnesium oxide MgO

Determination of sulfur in coal, sulfur and arsenic in pyrite and steel. Used as a standard for white pigments. Light magnesium oxide is mainly used as a raw material for the preparation of ceramics, enamels, refractory crucibles and refractory bricks. It is also used as a polishing agent, adhesive, paint and paper filler, and as an activator for accelerators, neoprene and fluororubber. After mixing with magnesium chloride and other solutions, it can be made into an aqueous solution of magnesium oxide. Used in medicine as an antacid and laxative, for hyperacidity and duodenal ulcer. Used as a catalyst in the chemical industry and as a raw material for the manufacture of magnesium salts, as well as for the manufacture of glass, dyeing powder, phenolic plastics, etc. Heavy magnesia is used for firing, grinding and semi-rolling in the rice milling industry.

One of the main uses of magnesium oxide is as a flame retardant. Traditional flame-retardant materials are widely used in flame-retardant mixtures composed of halogen-containing polymers or halogen-containing flame retardants. However, in the event of a fire, a large amount of smoke and toxic corrosive gases will be generated during thermal decomposition and combustion, which hinders fire fighting and evacuation, and corrodes equipment and equipment. In particular, people have found that more than 80% of fatalities in fires are caused by dense smoke and toxic gases produced by materials. Therefore, in addition to flame retardant efficiency, low smoke and low toxicity are also indispensable indicators for flame retardants. The development of China's flame retardant industry is extremely uneven. Chlorinated flame retardants account for a relatively large proportion, ranking first among flame retardants, of which chlorinated paraffins occupy a monopoly position. However, chlorine-based flame retardants release toxic gases when they act, which is far from the non-toxic and high-efficiency pursued by modern life. Therefore, in order to comply with the world's development trend of low-smoke, low-toxicity, and pollution-free flame retardants, flame retardants are developed, produced and applied. Magnesium oxide flame retardants are imperative.

Magnesium oxide MgO price

The price of magnesium oxide MgO will vary randomly according to various factors such as production cost, transportation cost, international situation, and supply and demand of magnesium oxide MgO in the market. Tanki New Materials Co., Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost products, nanomaterials and chemicals by providing a full set of customized services. If you are looking for magnesium oxide MgO, please feel free to send an inquiry to get the latest price of magnesium oxide MgO.

Suppliers of Magnesium Oxide MgO

As a global magnesium oxide MgO supplier, Tanki New Materials Co., Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (titanium oxide, silicon oxide, titanium oxide, etc.), high-purity target materials, functional ceramics and structural devices, and provides OEM services.