S5130

Silica, fumed

powder

• Sinónimos: Silica, Silicic anhydride, Silicon dioxide, Silicon dioxide amorphous
• Fórmula lineal: SiO₂
• Número de CAS: 112945-52-5
• Peso molecular: 60.08
• Número MDL: MFCD00011232
• Código UNSPSC: 12352300
• ID de la sustancia en PubChem: 57654622
• NACRES: NA.23

Propiedades

• Formulario: powder
• Nivel de calidad: 200
• superficie: 395 m²/g (±25 m²/g)
• índice de refracción: n20/D 1.46 (lit.)
• densidad: 2.3 lb/cu.ft at 25 °C (bulk density)(lit.)
• cadena SMILES: O=[Si]=O
• InChI: 1S/O2Si/c1-3-2
• Clave InChI: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Descripción

Descripción general

Fumed silica may be synthesized by high temperature hydrolysis of SiCl₄ in O₂(N₂)/H₂ flame. It is amorphous in nature and possesses very high specific area. The micro droplets of amorphous silica fuse into a branch and form a chain like agglomerate.

Aplicación

Fumed silica is used to deplete lipids and hormones in Taqman assays of human hepatoma cells HuH-7 and human liver cell line HepG2. Preparation of epoxidized natural rubber/fumed silica composites have been reported. Interaction of Gemini surfactant C12-s-C122Br with aqueous suspension of fumed silica has been studied. Fumed silica based nanocomposites reinforced with organo clay may be prepared. TiO₂/fumed silica porous ceramic material was used to prepare photocatalytic materials.

Características y beneficios

Has interesting thickening and thixotropic properties, and an enormous external surface area.

Otras notas

Particle sizes are for primary particles, which form branched, chain-like aggregates a few tenths of a micron long.

Información de seguridad

• Código de clase de almacenamiento: 11 - Combustible Solids
• Clase de riesgo para el agua (WGK): WGK 2
• Punto de inflamabilidad (°F): Not applicable
• Punto de inflamabilidad (°C): Not applicable
• Equipo de protección personal: Eyeshields, Gloves, type N95 (US)