Colour and appearance

Brownish yellow amorphous solid

Solubility

Freely soluble in Water, Methanol, Ethanol and Acetone

Water insoluble

Less than 0.5 % at 80C

Ash content

Less than 0.5%

Moisture content

Less than 1%

Heavy metals

Less than 20 ppm

Assay

By HPLC, Not less than 98%

Method of analysis

AOAC Official methods of analysis 1990