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Magnesium sulfate anhydrous

Magnesium sulfate anhydrous

Molecular formula: MgSO4·7H2O
Molecular weight: 246.48
CAS NO:10034-99-8
Properties: colorless columnar or granular crystal with bitter and salty taste. Relative density is 1.67. Easily soluble in water, slightly soluble in ethyl alcohol and glyrecin, insoluble in acetone.
Uses: as analytical reagent, precipitant for sulfate. It can also be used in pharmaceutical, printing and dyieng, papermaking, ceramic, and leather industries.
Standard: maximum assay of impurities is in %

Specification/item

Analytically pure-AR

Chemically pure-CP

High pure

Assay (MgSO4·7H2O) /% 

≥99.0

≥99.0

≥99.0

PH value(50g/L solution, 25℃)

5.0~8.0

5.0~8.0

5.0~8.0

Clarity test

Qualified

Qualified

Water insoluble matter

≤0.005

≤0.01

≤0.015

Chloride (Cl)

≤0.0005

≤0.001

≤0.01

Arsenic (As)

≤0.0001

≤0.0002

≤0.0002

Sodium (Na)

≤0.005

≤0.05

Calcium (Ca)

≤0.02

≤0.05

Manganese (Mn)

≤0.001

≤0.005

Iron (Fe)

≤0.0005

≤0.001

≤0.0015

Heavy metal (Pb)

≤0.0005

≤0.001

≤0.001

Packing: woven bag lined with plastic bag, kraft paper bag, or fiber drum, net weight is 25kg.

 

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