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Zinc Oxide (Indirect Method)
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Index Item
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Index
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Type I
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Type II
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Super Grade
|
Grade1
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Qualified Grade
|
Super Grade
|
Grade1
|
Qualified Grade
|
|
Zinc oxide %≥
|
99.70
|
99.50
|
99.40
|
99.70
|
99.50
|
99.40
|
|
Metallic metals (as Zn) %≤
|
None
|
None
|
0.008
|
None
|
None
|
0.008
|
|
Lead oxide (as pb) %≤
|
0.037
|
0.05
|
0.14
|
-
|
-
|
-
|
|
Manganic oxide (as Mn) %≤
|
0.0001
|
0.0001
|
0.0003
|
-
|
-
|
-
|
|
Copper oxide (as Cu) %≤
|
0.0002
|
0.0004
|
0.0007
|
-
|
-
|
-
|
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Insolubles in HCL solution%≤
|
0.006
|
0.008
|
0.05
|
-
|
-
|
-
|
|
Losses on ignition %≤
|
0.2
|
0.2
|
0.2
|
-
|
-
|
-
|
|
Screening residues (through 45μm mesh) %≤
|
0.10
|
0.15
|
0.20
|
0.10
|
0.15
|
0.20
|
|
Soluble matters in Water %≤
|
0.10
|
0.10
|
0.15
|
0.10
|
0.10
|
0.15
|
|
Volatile matters at 105°C %≤
|
0.3
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0.4
|
0.5
|
0.3
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0.4
|
0.5
|
|
Oilabsorption g/100g ≤
|
-
|
-
|
-
|
14
|
14
|
14
|
|
Colour (compared with standard specimen)
|
-
|
-
|
-
|
Similar
|
Few
|
Little
|
|
Colour killing ( Compared with standard specimen) %≥
|
-
|
-
|
-
|
100
|
95
|
90
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Uses:For paint,printing ink,rubber,cable, medicines,electronics ,papermaking ,enamel,match,cosmetic and other chemical industry application.
Packing: 25kg, 50kg, big sack bag or as required by the customer.
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