Magnesium CAS 7439-95-4 is a metallic chemical element with the symbol Mg. In 1808, David in England produced metallic magnesium by reducing magnesium oxide with potassium. Magnesium is a silver white light alkaline earth metal with active chemical properties. It can react with acids to generate hydrogen gas and has certain ductility and thermal dissipation. Magnesium is widely distributed in nature and is one of the essential elements for the human body.

Chinese name: Magnesium

Foreign name: Magnisium

CAS login number: 7439-95-4

EINECS login number: 231-104-6

Melting point: 651 ℃

Boiling point: 1107 ℃

Density: 1.74 g/cm ³

Appearance: Silver white metal

Flash point: 500 ℃

Application area

Commonly used as a reducing agent to replace metals such as titanium, zirconium, uranium, beryllium, etc. Mainly used for manufacturing light metal alloys, ductile iron, scientific instruments, and Grignard reagents. It can also be used for making fireworks, glitter powder, magnesium salts, inhalers, lighting flares, etc. The structural characteristics are similar to aluminum, which has various uses as a light metal and can be used as an alloy material for aircraft and missiles. However, magnesium is flammable at the ignition point of gasoline, which limits its application.

Daily use

Medical use: To treat magnesium deficiency and spasms.

Sports use: Inject magnesium compounds a few hours before intense exercise, or after intense exercise to compensate for magnesium loss. Gymnasts often apply basic magnesium carbonate to increase friction. In medical treatment: If magnesium salt is injected too quickly, it can cause fever and general discomfort.

Magnesium metal can react with most non-metals and acids; Under high pressure, magnesium hydride can be directly synthesized with hydrogen; Magnesium can react with halogenated hydrocarbons to synthesize Grignard reagents, which are widely used in organic synthesis. Magnesium has a clear tendency to generate coordination compounds.

Magnesium is an important material in the aviation industry, and magnesium alloys are used for manufacturing aircraft fuselage, engine parts, etc; Magnesium is also used in the manufacturing of photography and optical instruments; Magnesium and its alloys have a wide range of unstructured applications; Magnesium, as a strong reducing agent, is also used in the production of titanium, zirconium, beryllium, uranium, and hafnium.

Pure magnesium has low strength, but magnesium alloys are excellent lightweight structural materials widely used in industrial sectors such as space technology, aviation, automotive, and instrumentation. A supersonic aircraft has approximately 5% magnesium alloy components, and a missile typically consumes 100-200 kilograms of magnesium alloy. Magnesium is the main component of other alloys, especially aluminum alloys, and its combination with other elements can enhance the heat treatment of aluminum alloys; Magnesium is used as a spheroidizing agent for ductile iron; And some metals (such as titanium and zirconium) are produced using magnesium as a reducing agent; Magnesium is an essential component of incendiary and illuminating bombs; Magnesium powder is an essential raw material for holiday fireworks; Magnesium is a structural or packaging material in the nuclear industry; Magnesium fertilizer can promote the absorption and utilization of phosphorus by plants, while magnesium deficient plants tend to stagnate their growth. Magnesium is a fundamental material that plays an important role in people’s lives.

Plant use: Magnesium is mainly present in young organs and tissues, and is concentrated in seeds when plants mature. Magnesium ions can activate various phosphate mutases and phosphate kinases during photosynthesis and respiration processes. Similarly, magnesium can also activate the synthesis process of DNA and RNA. Magnesium is one of the synthetic components of chlorophyll. Without magnesium, chlorophyll cannot be synthesized, and the veins of the leaves remain green while the veins turn yellow, sometimes appearing reddish purple. If magnesium deficiency is severe, brown spots and necrosis will form. Exists in plants in the form of ions or organic matter binding. Magnesium is a component of chlorophyll and an activator of many enzymes. It is the main corresponding ion for hydrogen ions in photosynthetic phosphorylation.

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