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 |
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.
Any question about this product, please feel free to contact.