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Magnesium Chloride Hexahydrate - China
- Origin
- : China
- CAS Number
- : 7791-18-6
- HS Code
- : 2827.31.0000
Basic Info
- IUPAC Name
- : magnesium dichloride hexahydrate
- Molecular Formula
- : MgCl2·6H2O
- Molecular Weight (g/mol)
- : 203.3000
- Synonyms & Trade Names
- : Magnesium chloride hexahydrate; Bischofite; MgCl2.6H2O
- Purity / Assay (%)
- : 99% min
- Grade / Quality Level
- : Technical Grade
- Physical Form
- : Solid
- Concentration
- : Pure substance
- Appearance / Color
- : White to off-white solid
- Odor
- : Odorless
- Melting Point (°C)
- : 117.0000
- Density (g/cm³)
- : 1.5690
- Solubility in Water
- : Freely soluble (56.2g/100mL)
- UN Number
- : Not applicable
- H-Statements
- : None
- P-Statements
- : P260
- REACH Status
- : Registered
- Drug Precursor Status
- : Non-precursor
- Storage Class (GHS)
- : 13
- Storage Conditions
- : Cool, dry; hygroscopic; sealed containers
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Brief Overview
Magnesium chloride (MgCl2) is a faint-white to colourless crystalline salt which are ionic halides. Magnesium chloride can be extracted from natural sources like brine or sea water in the form of magnesium chloride hydrates. Magnesium chloride has unique physical properties such as high-water solubilities, high melting point (714 degrees celsius) and good moisture absorptivity.
Manufacturing Process
There are two methods used for producing magnesium chloride:
Method 1: Dow Process: Magnesium hydroxide (solid form) and hydrochloric acid (gas) is combined and reacted to give magnesium chloride in the form of a solution with water.
Method 2: Using Sea Water/Brine: The major raw material, sea water, is combined with dolomite. This dolomite is then converted to a mixture of various oxides by heating it at a high temperature. Calcium hydroxide remains in the solution mixture while magnesium hydroxide precipitates out. This is then filtered and heated to form a pure form of magnesium oxide. This oxide is then mixed with carbon and heated in an evaporator in the presence of a chlorine gas stream to give magnesium chloride in solid form.