Specification
Parameter
Index
High Grade
First Grade
ZnO
99.7% min
99.5% min
Pb
0.037% max
0.05% max
Mn
1ppm max
Cu
2ppm max
4ppm max
HCl Insoluble
0.006% max
0.008% max
Loss of Ignition
0.2% max
Residue On 45um sieve
0.1% max
0.15% max
Water Soluble
Volatile at 105 Degree
0.3% max
0.4% max