hydrophilic fumed silica 300/hydrophilic fumed silica suppliers
hydrophilic fumed silica 300 with a specific surface area of 300 m2/g .The original particle size can be 5- 40 nm. It's a kind of high purity white colloidal powder.
It is mainly used for high-temperature vulcanized silicone rubber, organic silicone defoamer, advanced printing ink, powder coating, PVC resin, unsaturated polyester resin thickening, thixotropic agent, pharmaceutical powder, tabular preparation, cosmetics etc.
hydrophilic fumed silica Specification| Specification | CS-1 | CS-2 | CS-3 | CS-4 | CS-5 | CS-6 |
| Specific sunface area(BET), /g | 150±15 | 200±20 | 160 | 210 | 115±15 | 170±15 |
| pH value in 4% dispersion | 3.9~4.5 | 3.9~4.5 | 7.0~8.5 | 7.0~8.5 | 3.7~4.5 | 3.7~4.5 |
| Loss on drying(2 hours at 105ºC), % | ≤1.5 | ≤2.0 | ≤0.5 | ≤0.5 | ≤0.7 | ≤0.7 |
| Loss on ignition(2 hours at 1000ºC based on material dried for 2 hours at 105ºC), % | ≤2.0 | ≤2.0 | ≤4.0 | ≤8.0 | ≤2.5 | ≤2.5 |
| Sieve Residue(45μm), mg/kg | ≤250 | ≤250 | - | - | - | - |
| Silica Content(Based on ignited material), % | ≥99.8 | ≥99.8 | ≥99.8 | ≥99.8 | ≥99.8 | ≥99.8 |
| Tamped Density(Based on material dried at 105ºC for 2 hours), g/dm² | 40~60 | 40~60 | 40~60 | 40~60 | 40~60 | 40~60 |
| Carbon Content (Based on material dried at 105ºC for 2 hours), % | - | - | 2.5~4.0 | 3.5~6.5 | 0.6~1.2 | 0.8~1.6 |
| Al2O3 mass fraction mg/kg | 400 | 400 | 400 | 400 | 400 | 400 |
| TiO2 mass fraction mg/kg | 200 | 200 | 200 | 200 | 200 | 200 |
| Fe2o3 mass fraction mg/kg | 30 | 30 | 30 | 30 | 30 | 30 |