S5130 Aldrich

Silica, fumed

powder, 0.007 μm

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



Related Categories Materials Science, Metal and Ceramic Science, Oxides, Silicon
form   powder
refractive index   n20/D 1.46(lit.)
particle size   0.007 μm
surface area   395 m2/g±25 m2/g
density   2.3 lb/cu.ft at 25 °C (bulk density)(lit.)


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.


25, 100 g in poly bottle

500 g in poly drum


Fumed silica is used to deplete lipids and hormones in Taqman assays of human hepatoma cells HuH-7 and human liver cell line HepG2.1 Preparation of epoxidized natural rubber/fumed silica composites have been reported.2 Interaction of Gemini surfactant C12-s-C122Br with aqueous suspension of fumed silica has been studied.3 Fumed silica based nanocomposites reinforced with organo clay may be prepared.4 TiO2/fumed silica porous ceramic material was used to prepare photocatalytic materials.5

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.

Price and Availability

Customers Also Viewed




nanopowder, spec. surface area 175-225 m2/g (BET), 99.8% trace metals basis

Silica, fumed

powder, 0.2-0.3 μm avg. part. size (aggregate)

Safety & Documentation

Safety Information

WGK Germany 
Protocols & Articles
Peer-Reviewed Papers


Set your institution to view full text papers.

1. PPARd increases expression of the human apolipoprotein A-II gene in human liver cells." International journal of molecular medicine Thulin P, et al. Int. J. Mol. Med. 21(6), 819-824, (2008)


2. Interaction Between Fumed-Silica and Epoxidized Natural Rubber Luo YY, et al. J. Inorg. Organomet. Polym. Mater. 21(4), 777-783, (2011)

3. Preparation and properties of TiO2/fumed silica composite photocatalytic materials Yu Y, et al. Procedia Eng. 27, 448-456, (2012)

4. Melt rheology of organoclay and fumed silica nanocomposites Ph. Cassagnau Polymer 49(9), 2183-2196, (2008)

5. Zheng O, et al. Energy Procedia 16 Part B, 1211-1219, (2012)

Vacuolar-ATPase isoform a2 regulates macrophages and cytokine profile necessary for normal spermatogenesis in testis. Jaiswal MK, Katara GK, Mallers T, et al. J. Leukoc. Biol. 96(2), 337-47, (2014)


Hemocompatibility evaluation of small elastomeric hollow fiber membranes as vascular substitutes. Mercado-Pagán ÁE, Ker DF, Yang Y, et al. J. Biomater. Appl. 29(4), 557-65, (2014)


Facilitated preparation of bioconjugatable zwitterionic quantum dots using dual-lipid encapsulation. Shrake R, Demillo VG, Ahmadiantehrani M, et al. J. Colloid. Interface Sci. 437, 140-6, (2014)


CKD-516 displays vascular disrupting properties and enhances anti-tumor activity in combination with chemotherapy in a murine tumor model. Moon CH, Lee SJ, Lee HY, et al. Invest. New Drugs 32(3), 400-11, (2014)


Cytotoxicity and genotoxicity of orthodontic bands with or without silver soldered joints. Gonçalves TS, Menezes LM, Trindade C, et al. Mutat. Res. Genet. Toxicol. Environ. Mutagen. 762, 1-8, (2014)


Magnesium isoglycyrrhizinate protects hepatic L02 cells from ischemia/reperfusion induced injury. Huang X, Qin J, Lu S, et al. Int. J. Clin. Exp. Pathol. 7(8), 4755-64, (2014)


Functional characterisation and permeation studies of lyophilised thiolated chitosan xerogels for buccal delivery of insulin. Boateng JS, Mitchell JC, Pawar H, et al. Protein Pept. Lett. 21(11), 1163-75, (2014)


Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?