(JB 258) type precise transparent white carbon black (silica)
Chemical name: Precipitation hydrated silica
Chemical formula: SiO2.nH2O
Appearance: white powdery or granular
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Quality index: In accordance with the standard of HG/T3061-1999 for Precipitation hydrated silica as rubber additive.
Item |
Index |
Silica % ≥ |
94 |
Color |
better than or equivalent to master standard |
Residue on sieve(45um)% ≤ |
0.2 |
Loss on heat % |
5.0-6.5 |
Loss on ignition % ≤ |
6.0 |
PH |
6.0-7.0 |
Total iron (mg/kg) ≤ |
300 |
DBP absorption value(cm3/g) |
3.20-3.50 |
Specific surface area (m2/g) |
250-300 |
Sulfate% ≤ |
0.2 |
Uses: used as delustrant of paint and coating.
Packing: PE film bag lined woven bag, Net wt 10Kg.
Features: steady quality and good dispersion, excellent processing performance when it is used as material of dulling powder, and can offer good dulling effect to paint. Good transparency; it will not happen hard precipitation when it is used as delustrant of paint |
