Appearance : colorless to white crystal or white crystal powder.
Specifications :
Purity : 99.5% min.
Sulphate : 0.02% max.
Chloride : 0.007% max.
Iron : 0.002% max.
As : 0.0002% max.
Pb : 0.001% max.
Usage : In the preparation of five-membered heterocyclic compound, which is a organic material widely used in pharmacy, chemical industry etc.
Packing : In 25kg plastic woven bag.