Product Name: Silica (precipitated silica)
English name: silica (silicon dioxide).
CAS number: 7631-86-9.
Product features: Precipitated silica has strong activity and adsorption, the appearance is white powder or granules, the melting point is 1710°C, it does not decompose at high temperature, it is insoluble in water and ordinary acids, and it is soluble in caustic alkali. It is non-toxic and highly toxic. High insulation.
Product use: Precipitated silica has good activity and adsorption rate, good reinforcing effect, good whiteness, and high insulation. It is a good reinforcing agent and filler. It is widely used in pesticides, tires, Conveyor belts, rubber rollers, textile rubber ring rubber rollers, shoemaking and other industries can significantly improve the physical properties of rubber materials, and have become the best reinforcing white fillers to replace carbon black. In addition, it is widely used in fire protection, pesticides, papermaking, feed, ink, triangular tape, silicone rubber and other industries and enterprises.
Technical indicators:
Indicator name | index |
Exterior | White powder |
SiO2 % | ≥75-90 |
particle size(um) | 45 |
heating loss105℃ 2h % | 4.0-5.0 |
burn reduction1000℃ % | ≤5.0 |
PH value | 6.5-7.5 |
BET specific surface area m2/g | 180-280 |
DBP absorption value cm3/g | 2.8-3.8 |