This product has a hydrophilic surface.
S5130
Silica, fumed
powder
Sinónimos:
Silica, Silicic anhydride, Silicon dioxide, Silicon dioxide amorphous
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About This Item
Fórmula lineal:
SiO2
Número de CAS:
Peso molecular:
60.08
MDL number:
UNSPSC Code:
12352300
PubChem Substance ID:
NACRES:
NA.23
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form
powder
Quality Level
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
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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.[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]
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.
Storage Class
11 - Combustible Solids
wgk_germany
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Certificados de análisis (COA)
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Los clientes también vieron
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)
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
Interaction Between Fumed-Silica and Epoxidized Natural Rubber
Luo YY, et al.
Journal of Inorganic and Organometallic Polymers and Materials, 21(4), 777-783 (2011)
Ivan S Pires et al.
Biotechnology progress, 36(5), e3010-e3010 (2020-04-30)
Haptoglobin (Hp) is a plasma glycoprotein that scavenges cell-free hemoglobin (Hb). Hp has various potential therapeutic applications, but it has been mainly studied for treatment of acute hemolytic conditions that can arise from situations such as massive blood transfusion, infusion
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Are the particles hydrophobic or hydrophilic?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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How can I determine the shelf life / expiration / retest date of this product?
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If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdfHelpful?
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