ultrafine CAS 1314-13-2 ZnO powder Zinc Oxide powder
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national standard GB1706-93(BA01-01) | internal control specification | |||||||
first grade | first-class | conformance | first grade | first-class | ||||
Purity TiO2,%(m/m) ≥ | 98 | 98 | 98 | 98.0 | 98.0 | |||
Color compare with standard | approximity | not lower than | slightly worse than | not lower than | slightly worse than | |||
Tinting strength compare with standard, % ≥ | 100 | 100 | 90 | 100 | 90 | |||
Matter volatile at 105℃, %(m/m) ≤ | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | |||
Matter volatile at 105℃ pretreated at (23±2)℃ and relative humidity (50 ± 5) % for 24h, ≤ | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | |||
Water soluble % ≤ | 0.4 | 0.5 | 0.6 | 0.5 | 0.6 | |||
PH of suspension,aqueous solution retainted, % | 6.5-8.0 | 6.5-8.0 | 6.0-8.5 | 6.5-8.0 | 6.0-8.5 | |||
Oil absorption, g/100g ≤ | 22 | 26 | 28 | 26 | 28 | |||
Residue on sieve 45um, % m/m | 0.05 | 0.10 | 0.30 | 0.10 | 0.30 | |||
Resistivity of aqueous extract, Ωm ≥ | 30 | 20 | 16 | 20 | 16 | |||
First grade ratio % ≥ | 95 | |||||||
qualified package weight rate % | 100 | |||||||





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