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Zinc sulphate
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
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Grade1
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Qualified Grade
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Super Grade
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Grade1
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Qualified Grade
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Zinc oxide %≥
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99.70
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99.50
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99.40
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99.70
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99.50
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99.40
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Metallic metals (as Zn) %≤
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None
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None
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0.008
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None
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None
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0.008
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Lead oxide (as pb)%≤
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0.037
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0.05
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0.14
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-
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-
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-
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Manganic oxide (as Mn) %≤
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0.0001
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0.0001
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0.0003
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-
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-
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-
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Copper oxide (as Cu) %≤
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0.0002
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0.0004
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0.0007
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-
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-
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-
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Insolubles in HCL solution%≤
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0.006
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0.008
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0.05
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-
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-
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-
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Losses on ignition %≤
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0.2
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0.2
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0.2
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-
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-
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-
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Screening residues (through 45µm mesh) %≤
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0.10
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0.15
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0.20
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0.10
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0.15
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0.20
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Soluble matters in Water%≤
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0.10
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0.10
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0.15
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0.10
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0.10
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0.15
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Volatile matters at 105°C %≤
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0.3
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0.4
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0.5
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0.3
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0.4
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0.5
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Oilabsorption g/100g ≤
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-
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-
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-
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14
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14
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14
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Colour (compared with standard specimen)
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-
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-
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-
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Similar
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Few
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Little
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Colour killing ( Compared with standard specimen)%≥
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-
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-
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-
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100
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95
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90
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Uses:For paint,printingink,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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