Magnesium Chloride Hexahydrate - China

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

Categories

Secondary Major Fertilizer

Technical Document

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.