Description

Standard:GB/T*********9
Appearance: white or grayish crystal powder.
index                                   first grade            standard grade
Assay:                                 *9% min                 *8.5% max
Loss on Ignition:                  0.3% max               0.5% max
Chloride(as NaCl):              0.2% max               0.2% max
Heavy Metal(as Pb):            *0 ppm max           *0 ppma max
As:                                       2ppm max               2 ppm max

Shelf life: 5 years
Storage: stored in a cool, dry, ventilated place
Package: *5kgs in paper bag