Zinc Oxide 90-98%
Zinc Oxide 90-98%(Direct method)
Molecular Formula: ZnO
Molecular Weight: 81.39
CAS Number: 1314-13-2
Appearance: White powder
Purity (calculated in ZnO ): 90-98%
Lead oxide: 0.2% max
Cadmium oxide: 0.02% max
Copper oxide: 0.006% max
Mn: 0.0002% max
Zn: none
Insoluble in hydrochloric acid: 0.02% max
Loss on ignition: 0.4% max
Soluble matters in water: 0.4% max
Sieve residue (320 mesh): 0.2% max
Water: 0.5% max
Covering power g/m2: 150 max
Oil absorption g/100g: 20 max
Colour killing: 95 max
Color (compared with standard sample): pass
Packing: 25kg woven bag