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Silicon Dioxide

  • CAS NO: 7631-86-9
  • Grade: Food Grade
  • Packaging: 25kg/bag
  • Certifications : ISO, KOSHER, HALAL, HACCP
  • Min Order: 500kg
  • Price: Inquiry

The chemical compound Silicon Dioxide, also known as silica (from the Latin silex), is an oxide of silicon with the chemical formula SiO2. It has been known for its hardness since ancient times. Silica is most commonly found in nature as sand or quartz, as well as in the cell walls of diatoms.

Specification

Item
Standard
Appearance
White powder
Purity (SiO2, %)
>= 96
Oil absorption (cm3/g)
2.0~ 3.0
Loss on drying (%)
4.0~ 8.0
Loss on ignition (%)
=<8.5
BET (m2/g)
170~ 240
pH (10% solution)
5.0~ 8.0
Sodium sulfate (as Na2SO4, %)
=<1.0
Arsenic (As)
=< 3mg/kg
Lead (Pb)
=< 5 mg/kg
Cadium (Cd)
=< 1 mg/kg
Mercury (Hg)
=< 1 mg/kg
Total heavy metals (as Pb)
=< 20 mg/kg
Total plate count
=<500cfu/g
Salmonella spp./ 10g
Negative
Escherichia coli/ 5g
Negative

CAS NO.
7631-86-9
Name
Silicon dioxide
Alias
Silica
Formula
SiO2
Formula weight
60.08
Density
2.6
Water solubility
insoluble
Melting point
1610 ºC
Hazard Symbols
  Xi   
Safety Description
S26;S37/39   
Risk Codes
R36/37   
  • Payment term: T/T 30% in advance and T/T 70% against copy of B/L. or 100% L/C at sight.
  • Shipment time: Within 3 weeks after confirming order.
  • We take photos of every stage of the process and can send them to you. Before we ship the container, you will have photos and lab test results.

Provide quality after-sale service once the container is received.

   In case the product is damaged, we will refund you or resend a new packaging.
   Also, if the goods are not as per your specification, we will callback the container at our cost, or compensate you as per our agreement.

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