Fumed Silica

Fumed SilicaFumed silica serves as a universal thickening agent, a thickener in milkshakes, and a anticaking agent in powdered foods. Like silica gel, it serves as a desiccant. It is used in cosmetics for its light-diffusing properties. It is used as a light abrasive, in products like toothpaste. Other uses include filler in silicone elastomer and viscosity adjustment in paints, coatings, printing inks, adhesives and unsaturated polyester resins Properties Unit Typical Value Standardization Specific surface area (BET) m 2 /g 150±25 GB/T10722 pH-value in 4% dispersion 3.6 4.5 GB/T1717 Loss on drying ( 2h @ 10 5Celsius degree) Wt% ≤1.5 GB/T5211.3 Loss on ignition(2h @ 1000,based on material dried for 2h @ 105 Celsius degree ) Wt% ≤2.5 GB/T20020 Sieve residue (45μm) % ≤0.05 GB/T5211.14 Silica content (based on ignited material) Wt% ≥99.8 GB/T20020 Tamped density (based on material dried for 2h @ 105 Celsius degree ) g/L 25 60 GB/T5211.4 Carbon content (based on material dried for 2h @ 105 Celsius degree ) Wt% ≤0.2 GB/T20020