Silicon dioxide CAS 7631-86-9

Products Name

Silicon dioxide CAS 7631-86-9

Products Description
Chemical Name: Silicon dioxide

CAS No.: 7631-86-9

Molecular Fomula:O2Si

Molecular weight: 60.08

Appearance: White to Off White, granule

Assay: 99%
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Silicon dioxide 7631-86-9 Typical Properties

Item
Specifications
Results
Inspection method

Appearance
White to Off White, granule
Conform
HG/T3063-1999

Whiteness
≥93%
99%
HG/T3063-1999

Purity of Sio2
≥95%
99.7%
 HG/T3062-1999

Particle size
25-30um
28 um
HG/T3063-1999

PH(5% suspension)
6.5-8.5
7.3
HG/T3067-1999

Heating loss(105℃ for 2hr.)
≤10%
3.1%
HG/T3065-1999

Ignition loss (1000℃ for 2hr.)
≤8.5%
3.5%
HG/T3066-1999

Absorption value, ml/100g
320-370
350
HG/T3072-1999

Specific surface area, m2/g
≥200
220
HG/T3073-2009

Heavy Metals (Pb)
≤0.003%
<0.001%
GB/T5009.74-2003

Arsenic (As)
≤0.0003%
<0.00001%
GB/T5009.11-2003

Sodium sulfate (Na2SO4)
≤0.4%
<0.02%
HG/T3071-1999

Ash
≤8.5%
4.0%
GB/T5009.11-2003

Iron (Fe)
≤0.015%
Conform
GB/T5009.11-2003

Conclusion
The results conforms with Enterprise standards

Silicon dioxide 7631-86-9 Usage

Widely used in industries such as metallurgy, refractory materials, chemicals, abrasives and construction
About 70% of white carbon black is used as a reinforcing filler for natural rubber and synthetic rubber, other fillers for synthetic resins, ink thickeners, anti-settling agents for pigments in coatings, matting agents, soft polishing agents for vehicles and metals, and Anti-chemicalbook settling agent in emulsifier. It can also be used as a carrier for pesticides and as a filler for lightweight newsprint. Due to the advantages of good electrical insulation, low heat generation, light color and no pollution, white carbon black is also widely used in hoses, tapes, heat-resistant gaskets, rubber rollers and medical products.
As an anti-caking agent, our country stipulates that it can be used as a powder essence with a maximum usage of 80g / kg; it can also be used for milk powder, cocoa powder, egg powder, vegetable fat powder and instant coffee, etc., with a maximum usage of 15.0g / kg.
Used as a reinforcing agent for rubber, an opening agent to prevent the adhesion of plastic films, an anti-settling agent for pigments, a matting agent for paints, a viscosity regulator, a pharmaceutical excipient, a catalyst carrier, and for cosmetics.
Used as filler for color TV cable, wire sleeve, rubber transparent bottom. Also used as thickening agent, thixotropic agent, anti-precipitation agent, matting agent, plastic opening agent, liquid drug adsorbent, cosmetics and paper filler

Silicon dioxide 7631-86-9 Packaging and Shipping
Packing:25 kg bag and drum ,1000kg bag
Delivery:by air ,by sea ,by courier
Silicon dioxide 7631-86-9 Storage
Stored in a cool dry place out of direct sunlight.

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