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Item | Test Standard |
Specific surface area(m2/g) | 380±25 |
PH value | 3.6-4.3 |
Loss on drying 105deg.C,2h (%) | ≤2.0 |
Loss on ignition(dry product)1,000deg.C 2h (%) | ≤2.5 |
Sieve residue(%) | ≤0.05 |
Fe2 O3 content ( mg/kg) | ≤30 |
Al2O3 content(mg/kg) | ≤500 |
TiO2 (mg/kg) | ≤300 |
Density(g/l) | 30-60 |
SiO2 content (%) | ≥99.8 |





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