Zinc oxide
Test items Indirect method Direct method
Zinc oxide(counted by dried substances )% ≥ 99.7 99.5
Metal ( Zn ) % ≤ None None
Lead oxide( Pb ) % ≤ 0.037 0.12
Manganese oxide ( Mn) % ≤ 0.0001 0.0002
Cupric oxide ( Cu ) % ≤ 0.0002 0.006
Burning decrement % ≤ 0.2 0.4
105℃ volatile substances % ≤ 0.3 0.4
Water dissoluble % ≤ 0.1 0.4
Hydrochloric indissoluble substance % ≤ 0.006 0.03
Sieve Residue % ≤ 0.1 0.28
Lead oxide(PbO) % ≤ -- 0.12
Package: woven bag, inner with plastic bag.25KG/bag
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Polyether polyol |
Model Hydroxyl value Water content Acid value pH value Potassium Chromaticity Viscosity Degree of unsaturation
mgKOH/g % mgKOH/g mg/Kg APHA mPa.s/... |
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Resin-specific adsorption of gold |
Indicator Parameter
Functional group -N+(CH3) 2H2O
Appearance Milky white opaque sphere
Finished form CLˉ
Moisture content % 45-55
Weight... |
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Dimethylamine |
Appearance: colorless transparent liquid.
Dimethylamine ≥ 99.8%;
Monomethylamine ≤ 0.10%;
Trimethylamine ≤ 0.05%;
Ammonia ≤ 0.03%;
Purposes: m... |
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Methylene Chloride |
Test items Index
Methylene Chloride % ≥99.95
Water % ≤0.01
Acid (HCl) % ≤0.0004
Chromaticity Hazen Unit(Pt-Co Color) ≤10
Residue a... |
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Hydrochloric acid |
Item Index
Total acidity(HCI) ≥ 31.0
Iron(Fe) ≤ 0.002
Residue on ignition % ≤ 0.05
Free chlorine(CI)% ≤ 0.004
Arsenic(As)% ≤ 0.... |
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