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Silica, fumed

ALDRICH/S5130 - powder

Synonym: Silica; Silicic anhydride; Silicon dioxide; Silicon dioxide amorphous

CAS Number: 112945-52-5
Empirical Formula (Hill Notation): SiO2
Molecular Weight: 60.08
MDL Number: MFCD00011232
Linear Formula: SiO2
Product Type: Chemical
Catalog Number PKG Qty. Price Quantity
45-S5130-25G 25 g
 $73.40
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45-S5130-100G 100 g
 $90.70
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45-S5130-500G 500 g
 $109.00
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This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.

This image depicts SKU: S5130-25G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.

This image depicts SKU: S5130-100G

 

density 2.3 lb/cu.ft at 25 °C (bulk density)(lit.)
form powder
InChI 1S/O2Si/c1-3-2
InChI key VYPSYNLAJGMNEJ-UHFFFAOYSA-N
refractive index n20/D 1.46 (lit.)
SMILES string O=[Si]=O
surface area 395 m2/g (±25 m2/g)
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.
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.
Other Notes: Particle sizes are for primary particles, which form branched, chain-like aggregates a few tenths of a micron long.
Packaging: 25, 100 g in poly bottle
Packaging: 500 g in poly drum
RIDADR NONH for all modes of transport
WGK Germany WGK 2
Flash Point(F) Not applicable
Flash Point(C) Not applicable
Density 2.3 lb/cu.ft at 25 °C (bulk density)(lit.)
Refractive Index n20/D 1.46 (lit.)
UNSPSC 12352300

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