A white or almost white, crystalline powder, freely soluble in water, slightly soluble in alcohol, practically insoluble in ether.

Infrared absorption spectrophotometry to compare with the spectrum obtained with sodium picosulfate CRS.

Ultraviolet absorption: should confirm with reference standard.

white precipitate is formed with barium chloride solution.

A violet colour develops with sulphuric acid and potassium dichromate solution.

The solution gives reaction of sodium .

Solution S is clear and not more intensely coloured than reference solution GY7.

Not more than 0.25 ml of 0.01 M sodium hydroxide is required for neutralization.

Examine by thin-layer chromatography. NMT 0.2 %

NMT 200ppm

NMT 400ppm

NMT 20ppm

3.0% to 5.0 %w/w

98.5% to 100.5% w/w