Appearance White or off-white powder, no odor no taste
Identification Meet the requirements
Granulometry Remains 60 mesh ≤1%
Remains 200 mesh ≤30%
Conductivity ≤75us/cm
pH value 5.0~7.5
Loss on drying 7.0% max
Residue on ignition 0.1% max
Water soluble substances 0.25% max
Ether soluble substances 0.05% max
Bulk density(g/ml) 0.28~0.38
Heay metal (Pb) 10ppm max
Dp 200~300