637238

Silicon dioxide

nanopowder, 10-20 nm particle size (BET), 99.5% trace metals basis

• Synonym(s): Silica, Nanosilica, Silicon dioxide
• Linear Formula: SiO₂
• CAS Number: 7631-86-9
• Molecular Weight: 60.08
• EC Number: 231-545-4
• MDL number: MFCD00011232
• UNSPSC Code: 12352302
• PubChem Substance ID: 24882839
• NACRES: NA.23

Properties

• Quality Level: 100
• assay: 99.5% trace metals basis
• form: nanopowder
• particle size: 10-20 nm (BET)
• bp: 2230 °C (lit.)
• mp: >1600 °C (lit.)
• density: 2.2-2.6 g/mL at 25 °C
• bulk density: 0.011 g/mL
• SMILES string: O=[Si]=O
• InChI: 1S/O2Si/c1-3-2
• InChI key: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Description

General description

The refractive index of silica nanoparticles is similar to polymeric coatings, so it finds several applications in the preparations of nanocomposites. Properties suh as, thermal resistance, electrical and mechanical are enhanced. Silica nanoparticles find uses in various fields of catalysts, pigment stabilization, electronics and sensors.

Application

Silica nanoparticles have been used :

• To study the nonlinear optical properties of SiO₂ nanocomposites in weak optical fields.
• As a nanoadditive in nanocomposite calcium alginate fibers.
• As dispersant in liquid polymethylsiloxane to exihibit unique optical non linearity in low intensity visible radiation fields.

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: nwg
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: dust mask type N95 (US), Eyeshields, Gloves