Silicon dioxide

  • Silicon dioxide
Name:Silicon dioxide
Synonyms:Silica
CAS Registry Number:7631-86-9
EINECS:231-545-4
Appearance:White Powder
Application:Industrial usage, food additives, medicine usage
Density:2.6
Melting point:1610 ºC
Purity:98%
Solubility:Insoluble
Refractive index:1.46
PH:5-8 (100g/l, H2O, 20℃)(slurry)
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Binhong Industry Co., Ltd.

Product Description

Application of Silicon dioxide

1) Shoes-making industry: rubber outsole reinforcement agent similar to black carbon. It brings the light color and transparent appearance of rubber outsole with excellent performance

2) Tyre industry: decreases friction on ground sharply, and increases the tyre holding on the wet and icy ground. The bonding between curtain threads or woven material and rubber compound is improved

3) Silicon rubber: its aging, resilience and compression set are increased

4) Plastic industry: increases the plastic products' flexibility, strength and resistance to water

5) Coating industry: it provides the performance in preventing coating from aggregating and hanging down. It can increase the viscosity and dull the coating shine

6) Pharmaceutical industry: it gives a function of increasing the viscosity, floating and dispersing. It can be a carrier and an anti-lumping agent

Specifications of Silicon dioxide 7631-86-9

           Appearance

White Powder

      Heating loss (105°C 1.5h) %

4.0~8.0

      Ignition Loss 1000°C         (Dry Basis) %

3.0~7.0

DBP(Oil absorption value)  cm3/g

2.0~3.5

          PH value(5% Aqueous Suspension)

5.0~8.0

     SiO2(Dry Basis) %

≥98

      BET Specific Surface Area  m2/g

155~175

      45µm Residue on sieve   %

≤0.5

      Salt As Na2SO4 %  m2/g

<1.5

    Heavy Metal (in form of Pb)

   ≤0.003

         As %

   ≤0.0003

         Pb %

   ≤0.001

         Cd %

   ≤0.0003

Dioxin and dioxin-like PCB’S

     <1.5

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