Product Name

:MAGNESIUM SULPHATE HEPTAHYDRATE

C.A.S. No.

:10034-99-8

Molecular Formula

: MgSO₄.7H₂O

Molecular Weight

: 246.50 g/mol

SPECIFICATION

IP

BP

Description

Colorless crystals or white, Crystalline powder.

White or almost white, crystalline powder or brilliant , colorless crystals.

Solubility

-

Freely Soluble in water , very soluble in boiling water and practically insoluble in ethanol (96 % )

Identification

• Reaction
• Reaction

• A: Reactions of Sulphates
• B: Reactions of Magnesium salts

• A: It gives reaction of Sulphates.
• B :It gives reaction ofmagnesium

pH of a 5% solution at 250C

-

-

Appearance of solution

Dissolve 5 g in sufficient carbon dioxide free water to produced 50 ml (Solution A) is clear and colorless.

Dissolve 5 g in sufficient carbon dioxide free water to produced 50 ml (Solution S) is clear and colorless.

Acidity or alkalinity

NMT 0.2 ml of either 0.01 M hydrochloric acid or 0.01 M sodium hydroxide is required to change the color of solution.

NMT.0.2 ml of 0.01 M hydrochloric or 0.01 M sodium hydroxide is required to change the color of indicator.

Arsenic

NMT 2 ppm.

NMT 2 ppm

Heavy metals

NMT 10 ppm.

-

Selenium

-

Iron

NMT 200 ppm.

NMT 20 ppm

Chloride

NMT. 300 ppm

NMT. 300 ppm

Organic Volatile impurities

-

Residual Solvents

-

Loss on drying

48.0 to 52.0 %

48.0 % - 52.0 %

Loss on Ignition

-

-

Assay (on dried basis)

99.0 % to 100.5 %

99.0 % - 100.5 %