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Magnesium chloride is a chloride, chemical formula MgCl2. Colorless and deliquescent crystal.
These salts are typical ionic halides, soluble in water. Magnesium chloride hydrate can be extracted from brine or sea water. Usually with 6 molecules of crystalline water. But lose crystal water when heated to 95 ℃. Above 135 ℃ when starts to break down and release the hydrogen chloride (HCl) gas. Industrial raw material for magnesium production. Found in sea water and brine. Magnesium chloride hydrate is a substance commonly used in prescription oral magnesium supplements.
Folding chemistry
1. Magnesium chloride hexahydrate can be hydrolyzed by heating
When heated, water is lost and hydrogen chloride is partially used to form magnesium oxide and basic magnesium chloride.
2. Magnesium and chlorine gas can be generated by electrolysis of anhydrous magnesium chloride in molten state
MgCl2(melting)== electrolysis ==Mg+Cl2, up
3. Magnesium hydroxide precipitation is generated under alkaline environment.
Magnesium 2 + + 2 OH - = = = = Mg (OH) 2 left
Content as MgCl2 | 46% min | 47.2 |
Sulphate | 1.2% max | 0.02 |
Alkali metal chloride | 1.0% max | 0.4 |
Calcium | 0.5% max | 0.1 |
Water Insoluble | 0.5% max | 0.01 |
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