Medium grade magnesia has strong reducibility, can react with boiling water to release hydrogen, and can produce dazzling white light when burning. Magnesium does not react with fluoride, chromic acid, and is not subject to caustic corrosion, but is easily dissolved in inorganic acid Fused magnesia Magnesium can be directly combined with nitrogen, sulfur, halogens, etc. Chemicals including hydrocarbons, aldehydes, alcohols, phenols, amines, lipids and most oils have a slight or functional relationship with magnesium. However, the reaction with halogenated hydrocarbon under anhydrous condition is more intense (Grignard reagent is generated). Magnesium can burn with carbon dioxide, so magnesium combustion cannot be extinguished with carbon dioxide extinguisher. Fused magnesia

Because magnesium can interact with N? And O? Reaction, so when magnesium burns in the air, intense combustion emits dazzling white light, releases heat, and forms a white solid. The change in vinegar is that bubbles appear quickly, float on the vinegar surface, and gradually disappear. Some fireworks and flares contain magnesium powder, which makes use of the property that magnesium can emit dazzling white light when burned in the air. Metal magnesium can react with most nonmetals and acids; It can directly synthesize magnesium hydride with hydrogen under high pressure; Magnesium can react with halogenated hydrocarbon to synthesize Grignard reagent, which is widely used in synthesis. Magnesium has an obvious tendency to form coordination compounds.

Magnesium is an important material in the aviation industry. Magnesium alloys are used to manufacture aircraft fuselage, engine parts, etc; Magnesium is also used to make photographic and optical instruments; Magnesium and its alloys are also widely used in non structural applications; As a strong reducing agent, magnesium is also used in the production of titanium, zirconium, beryllium, uranium and hafnium. In case of slight magnesium deficiency, magnesium can be supplemented by diet or oral administration, magnesium oxide or magnesium hydroxide can be given, and aluminum hydroxide glue can be used in combination to avoid diarrhea. When oral administration is intolerable or unabsorbable, intramuscular magnesium injection can be used, generally 20%~50% magnesium is used. Attention should be paid to the occurrence of acute magnesium poisoning during intravenous administration of magnesium to avoid sudden cardiac arrest. Therefore, avoid giving too much or too fast magnesium. In case of magnesium poisoning, inject calcium gluconate or calcium chloride.