Colour and appearance

Pale yellow crystalline solid

Solubility

Freely soluble in Water, Methanol, Ethanol

Water insoluble

Less than 0.5 %

Ash content

Less than 0.5%

Moisture content

Less than 1%

Melting Point

141-143 C

Heavy metals

Less than 20 ppm

Assay

By HPLC, Not less than 98%

Method of analysis

AOAC Official methods of analysis 1990