Product Name

: SODIUM CARBONATE ANHYDROUS

C.A.S. No.

: 497-19-8

Molecular Formula

: Na₂CO₃

Molecular Weight

: 106.0 g/mol

SPECIFICATION

IP

BP

USP

Description

White or almost white powder, Slightly granular powder Hygroscopic.

White or almost white, Slightly granular powder Hygroscopic.

White or almost white powder, crystalline powder.

Solubility

-

Freely Soluble in water, practically insoluble in ethanol (96 %).

-

Identification

1. By color

2. Reaction

3. Reaction

4. LOD

A : The solution is strongly alkaline

B : Reactions of carbonates & sodium salts

A : The solution is strongly alkaline

B : Test A gives the reaction of Carbonates

C : Test A gives reaction of Sodium

D : Complies with LOD Test.

A : It gives reaction of Carbonate

B : It gives reaction of Sodium

Water

-

-

NMT 0.5 %

Appearance of Solution

2.0 % w/v solution is clear and not more intensely colored than reference solution YS6

2.0 % w/v solution is clear and not more intensely colored than reference solution Y5

-

Alkali Hydroxides & Bicarbonates

The solution remains Clear

The solution remains Clear

-

Arsenic

-

NMT 5 ppm

-

Heavy metals

NMT 2 ppm

NMT 10 ppm

Calcium

2.0 % W/V solution, when boiled for 5 min. solution is clear.

NMT100 ppm

-

Iron

NMT 50 ppm.

NMT50 ppm

-

Chlorides

NMT 125 ppm

NMT125 ppm

-

Sulphates

MNT 250 ppm

NMT250 ppm

-

Organic Volatile Impurities

-

-

Meets the requirement

Residual Solvents

-

-

Meets the requirement

Loss on Drying

NMT 1.0 %

NMT 1.0 %

-

Assay

99.5 % to 100.5 %

99.5 % - 100.5 % (dry basis)

99.5 % - 100.5 %