Sodium Bicarbonate

Grades

IP

BP/EP

USP

Description

White crystalline powder or small, opaque, monoclinic crystals; odourless

White or almost white crystalline powder

White, crystalline powder.

Identification

It gives reactions of bicarbonates and of sodium salts

It gives reactions of carbonates and bicarbonates, gives reactions of sodium

Sodium meets the requirements  Bicarbonate meets the requirements

Solubility

Freely soluble in water, practically insoluble in ethanol (95%)

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

Soluble in water , insoluble in alcohol

Ammonium

-

Max 20 ppm

Max 2ug/g

Arsenic

2 ppm

Max 2 ppm

Max 2ppm

Iron

20 ppm

Max 20 ppm

Max 5 ppm

Heavy Metals

Max 5 ppm

-

-

Clarity of Solution

Clear and colorless

Clear and colorless

-

Chloride

200 ppm

Max 150 ppm

Max 0.015%

Calcium

Solution is clear

Max 100 ppm

Max 0.01%

Carbonate

Max 8.6%

Max 8.6%

Max 0.23%

Magnesium

-

-

Max 0.004%

Insoluble substances

-

-

Complete and clear

Sulphate

150 ppm

Max 150 ppm

Max 0.015%

Copper

-

-

Max 1 ppm

Limits of sulfur compounds

-

-

Max 0.015%

Limit of organics

-

-

Max 0.01%

Limit of ammonia

-

-

Max 20 ppm

Loss on drying

-

-

Max 0.25%

Assay Dry Basis

99.0% to 101 %

99.0% to 101 %

99.0% to 100.5%