|
|
zinc oxide（direct process）
quality index(meet standard gb/t3494-1996 )
|
|
index item
|
for plastic
appication
|
for paint application
|
|
|
zno-x1
|
zno-x2
|
zno-t1
|
zno-t2
|
zno-t3
|
|
zinc oxide %≥
|
99.5
|
99.0
|
99.5
|
99.0
|
98.0
|
|
lead oxide (pbo) %≤
|
0.12
|
0.20
|
—
|
—
|
—
|
|
cadmium oxide (cdo) %≤
|
0.02
|
0.05
|
—
|
—
|
—
|
|
copper oxide(cuo) %≤
|
0.006
|
—
|
—
|
—
|
—
|
|
mangaese(mn) %≤
|
0.0002
|
—
|
—
|
—
|
—
|
|
metallic metals(as zn)
|
none
|
none
|
none
|
|
insolubles in hcl solution %≤
|
0.03
|
0.04
|
—
|
—
|
—
|
|
losses on ignition %≤
|
0.4
|
0.6
|
0.4
|
0.6
|
—
|
|
soluble matters in water %≤
|
0.4
|
0.6
|
0.4
|
0.6
|
0.8
|
|
screening residues(45祄 wet screen)
%≤
|
0.28
|
0.32
|
0.28
|
0.32
|
0.35
|
|
105癈soluble matter in water %≤
|
0.4
|
0.4
|
0.4
|
0.4
|
0.4
|
|
hiding power g/m2≤
|
|
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