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Item | Unit | WSD-25 | WSD-15 | WSD-75 | ||
Appearance | / | white powder | ||||
Al(OH)3 | % | ≥99.5 | ≥99.5 | ≥99.5 | ||
SiO2 | % | ≤0.008 | ≤0.05 | ≤0.05 | ||
Fe2O3 | % | ≤0.01 | ≤0.03 | ≤0.09 | ||
Na2O3 | % | ≤0.20 | ≤0.30 | ≤0.30 | ||
Grain Size(D50) | μm | 18~22 | 13-16 | 73-78 | ||
Whiteness | / | ≥95 | ≥93 | ≥90 | ||
Moisture | % | ≤0.3 | ≤0.3 | ≤0.4 | ||
loss on ignition | % | 34±1 | 34±1 | 34±2 | ||
PH | / | 9~10 | 9~10 | 6-8 | ||




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