SILICON DIOXIDE, amorphous

Product Code: SIS6960.0
CAS No: 112945-52-5
SDS Sheets: EU | US
COMMERCIAL
112945-52-5
Pack Size
Quantity
Price
 
500 g
$41.00
2 kg
$110.00

Product data and descriptions listed are typical values, not intended to be used as specification.

  • Synonyms

    Fumed silica
  • HMIS

    2-0-0-X
  • Molecular Formula

    SiO2
  • Molecular Weight (g/mol)

    60.09
  • TSCA

    Yes
  • Bulk Density (g/mL)

    ~50
  • Density (g/mL)

    2.2
  • Melting Point (˚C)

    >1,600°
  • Refractive Index @ 20˚C

    1.46

Additional Properties

  • Hydrolytic Sensitivity

    5: forms reversible hydrate
  • Safety

  • Hazard Info

    oral rat, LD50: 8,160 mg/kg
  • Packaging Under

    Nitrogen
  • Silica Nanoparticles

    A range of silica structures from 20 nm to 1 micron have been modified with silanes to reduce hydroxyl content allowing improved dispersion. Other versions have monolayers with isolated secondary amine functionality, providing controlled interactions with resins. Systems that maintain low levels of hydroxyls have improved electrical properties. Introduction of low levels of secondary amines impart improved mechanical properties particularly in high humidity environments.

    Silicon dioxide

  • Fumed silica
  • Amorphous
  • Ultimate particle size: 12 - 20 nm
  • Surface area, 200 m2/g
  • Isoelectric point: 2.2
  • γc of treated surfaces: 44 mN/m
  • Bulk density: ~50 g/L
  • pH, (4% aqueous slurry): 3.5-4.5