Index

1 Type

2 Type

3 Type

ZnO /% ≥

99.0

97.0

95.0

average grain diameter on electron microscope /nm ≤

100

100

100

Average grain diameter on Xrd method/nm ≤

100

100

100

Area (m²/n) ＞

15

15

35

Agglomeration index ≤

100

100

100

Pd /% ≤

0.001

0.001

0.03

Mn /% ≤

0.001

0.001

0.005

Cu /% ≤

0.0005

0.0005

0.003

Cd /% ≤

0.0015

0.005

--

Hg /% ≤

0.0001

--

--

As /% ≤

0.003

--

--

Volatile matter on 105℃ /% ≤

0.5

0.5

0.7

Water soluble matter /% ≤

0.10

0.10

0.7

Insoluble matter in HCl /% ≤

0.02

0.02

0.05

Weight loss on ignition/% ≤

--

2

4