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Physical & Chemical Data of fumed silica 200 | ||||||
Properties | Unit | Typical Value | Testing Standard | |||
Specific surface area(BET) | m2/g | 200±20 | GB/T 20020 | |||
pH in 4% dispersion | 3.9~4.5 | GB/T 20020 | ||||
Loss on drying (2 hour at 105℃) | % | ≤2.0 | GB/T 20020 | |||
Loss on ignition (2 hour at 1000° based on material dried for 2 hours at 105℃) | % | ≤2.0 | GB/T 20020 | |||
Sieve residue(45μm) | mg/kg | ≤250 | GB/T 20020 | |||
Silica content ( Based on ignited material) | % | ≥99.8 | GB/T 20020 | |||
Tamped density (based on material dried for 2 hours at 105℃) | g/dm² | 30~60 | GB/T 20020 |