Product Name

: SODIUM SULPHATE ANHYDROUS

C.A.S. No.

: 7757-82-6

Molecular Formula

: Na₂SO₄

Molecular Weight

: 142.04 g/mol

SPECIFICATION

BP

USP

Description

White or almost white powder hygroscopic.

White almost white powder hygroscopic.

Solubility

Freely soluble in water.

-

Appearance of solution

2.2 % w/v solution is clear and colorless

-

Identification

• Reaction

• Reaction

• LOD

A: It gives reaction of sulphates.

B: It gives reaction of Sodium.

C: It complies with Loss on drying.

A: It gives reaction of sulphates.

B: It gives reaction of Sodium.

Acidity or alkalinity

NMT 0.5 ml of 0.01 M hydrochloric acid or 0.01 M sodium hydroxide is required to change the color of the indicator.

NMT 0.5 ml of 0.01 M hydrochloric acid or 0.01 M sodium hydroxide is required to change the color of the Solution.

Chloride

NMT 450 ppm

NMT 200 ppm

Calcium

NMT 450 ppm

-

Heavy Metal

-

NMT 10 ppm

Iron

NMT 90 ppm

-

Magnesium

NMT 200 ppm

-

Loss on drying

NMT 0.5 %

NMT 0.5 %

Assay ( on dry basis )

98.5 % - 101.0 %

NLT 99.00 %