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Molecular formula: MgCl2·6H2O
Molecular weight: 203.30
CAS NO: 7791-18-6
Properties: colorless crystal. Relative density is 1.56, melting point is 118℃. Soluble in water and ethyl alcohol.
Uses: in analytical reagent, dialysis powder and dialysis solution in pharmaceutical industry.
Standard: maximum assay of impurities is in %
| Specification/item |
Analytically pure-AR
|
Chemically pure-CP
|
High pure
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USP
|
|
Assay (MgCl2·6H2O) /%
|
≥98.0
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≥98.0
|
98.0-101.0
|
98.0-101.0
|
|
PH(50g/L solution, 25℃)
|
5.0~6.5
|
5.0~6.5
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5.0~6.5
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4.5-7.0
|
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Clarity test
|
Qualified
|
Qualified
|
－
|
—
|
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Water insoluble matter
|
≤0.005
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≤0.01
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≤0.01
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≤0.005
|
|
Sulfate (SO4)
|
≤0.005
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≤0.01
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≤0.01
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≤0.005
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Phosphate (PO4)
|
≤0.001
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≤0.002
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－
|
|
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Total nitrogen (N)
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≤0.005
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≤0.01
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－
|
|
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Potassium (K)
|
—
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—
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—
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Qualified
|
|
Calcium (Ca)
|
≤0.05
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≤0.1
|
Qualified
|
|
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Iron (Fe)
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≤0.0005
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≤0.001
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≤0.001
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—
|
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Barium and strontium (as Ba)
|
≤0.005
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≤0.005
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－
|
Qualified
|
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Heavy metal (Pb)
|
≤0.0005
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≤0.001
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≤0.001
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≤0.001
|
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Arsenic (As)
|
－
|
－
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≤0.0005
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≤0.0003
|
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Acidity or alkalinity
|
－
|
－
|
Qualified
|
—
|
|
Lead (Pb)
|
－
|
－
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≤0.0005
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Qualified
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Organic matter
|
|
－
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|
Qualified
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Packing: woven bag lined with plastic bag, kraft bag and fiber drum, net weight is 25kg.
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