S5130
Silica, fumed
powder
Sinónimos:
Silica, Silicic anhydride, Silicon dioxide, Silicon dioxide amorphous
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Fórmula lineal:
SiO2
Número CAS:
Peso molecular:
60.08
NACRES:
NA.23
PubChem Substance ID:
UNSPSC Code:
12352300
MDL number:
Servicio técnico
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powder
Quality Level
reaction suitability
core: silicon
surface area
395 m2/g (±25 m2/g)
refractive index
n20/D 1.46 (lit.)
density
2.3 lb/cu.ft at 25 °C (bulk density)(lit.)
SMILES string
O=[Si]=O
InChI
1S/O2Si/c1-3-2
InChI key
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
General description
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.
Application
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.
Features and Benefits
Has interesting thickening and thixotropic properties, and an enormous external surface area.
Other Notes
Particle sizes are for primary particles, which form branched, chain-like aggregates a few tenths of a micron long.
Clase de almacenamiento
11 - Combustible Solids
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Petra Thulin et al.
International journal of molecular medicine, 21(6), 819-824 (2008-05-29)
The peroxisome proliferator-activated receptor delta (PPARdelta) is a transcription factor that regulates genes of importance in lipid and glucose metabolism. ApoA-II is one of the major proteins of the HDL-particle. The aim of this study was to investigate the regulation
Melt rheology of organoclay and fumed silica nanocomposites
Ph. Cassagnau
Polymer, 49(9), 2183-2196 (2008)
Preparation and properties of TiO2/fumed silica composite photocatalytic materials
Yu Y, et al.
Procedia Engineering, 27, 448-456 (2012)