Index

Extra grade

Appearance(compared with standard sample)

Standards-compliant

Purity(zinc oxide) content/ %

≥95.0

Metal zinc content/ % 

None

Lead oxide content /%

≤0.3

Mn content/ %

NONE

CuO content/%

NONE

Hydrochloric acid insoluble /%

≤0.03

Loss on ignition/ %

≤0.6

Sieve residue(200)/%

≤0.2

Water soluble salt/%

≤0.4

Hiding power(g/m)

≤110

The oil absorption value/%

≤20

Tinting strength/%

100±3

Cadmium oxide/%

≤0.05