All structures are computer generated. Please rely on the product data below for placing your order. If you see any errors in structures, please email customer service so that they can be addressed.


Product Code: SIS6962.0

Cas No: 68909-20-6/7631-86-9

2 kg
500 g
Organosilane-modified 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
  • Hexamethyldisilazane, HMDZ, treated
  • Amorphous
  • Fumed silica
  • Surface area, 150-200 m2/g
  • Calculated ratio: (CH3)3Si/HO-Si: 2/1
  • Carbon content: 3%
  • Ultimate particle size: 20 nm
  • EINECS Number: 272-697-1

    Alternative Name: Fumed silica, HMDZ treated

    Specific Gravity: 2.2

    HMIS Key: 2-0-0-X

    Hydrolytic Sensitivity: 5: forms reversible hydrate

    Formula: SiO2


    Refractive Index: 1.45

    Additional Properties: Calculated ratio: (CH3)3Si/HO-Si: 2/1
    150-200 m2/g