* Appearance: A whiter or almost white crystalline powder

* Solubility: Practically insoluble in water, freely soluble in alcohol

* Identification:

* Related substances (HPLC): Not more than 2. 0%

* Water(K. Fisher): 1. 4%-2. 0%

* Sulphated ash: Not more than 0. 2%

* Assay: 97. 5-101. 0% calculated to Anhydrous substance

* Particle Size: 95% less than 20 micron

* 10% not more than 75 micron

* Packing: alu. Tin