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Pharmaceutical excipients
Magnesium sulfate heptahydrate

Product name

Magnesium sulfate, heptahydrate

Specification

Pharmaceutical grade (USP,BP,EP,CP)

Molecular formula

MgSO4 ·7H2O

CAS

10034-99-8

H.S. CODE

2833210000

Molecular weight

246.47

Appearance

Colorless crystal

Package

25KG Woven bags or fiber drums



Property

  Colorless columnar or granular particles. A bitter salty. The relative density 1.67. In dry air weathering. Melting point 1124 ℃ (no water content), soluble in water, soluble in ethanol, glycerin, insoluble in acetone.

Application

  Used as an analytical reagent, such as for sulfate precipitation agent. Also used in medicine, printing and dyeing, papermaking, ceramics and leather industry.

Test standard

Test items

Specification

BP2015

USP35

CP2015

Appearance

Colorless crystal

Colorless crystal

Colorless crystal

Assay

99.0%~100.5%

99.0~100.5%

99.5%

Appearance of solution

Conform

Conform

Conform

pH

5.5~9.2

5.5~9.2

5.5~9.2

Acidity or alkalinity

Conform

Conform

Conform

Chloride

0.03%

0.014%

0.01%

Arsenic

0.0002%

0.0002%

0.0002%

Iron

0.002%

0.002%

0.0015%

Calcium

0.02%

Heavy metals

0.001%

0.001%

0.001%

Zinc

Conform

Loss on dry

48.0%~52.0%

2%

0.0001%

Loss on ignition

40.0~52.0%

48.0~52.0%

Storage

    Store in a cool, dry and well ventilated place. Keep away from incompatible substances. Keep container closed.


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