The maximum particle size of this product is 325 Mesh or 45 um. Note that product 381276, another fumed silica item, has a particle size range of 120 – 140 Mesh or 105 – 125 um. Please see the link below to review this item:
https://www.sigmaaldrich.com/US/en/product/aldrich/381276
S5130
Silica, fumed
powder
Synonym(s):
Silica, Silicic anhydride, Silicon dioxide, Silicon dioxide amorphous
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| Pack Size | SKU | Availability | Price |
|---|---|---|---|
| 25 g | Available to ship TODAYfromMILWAUKEE | $79.10 | |
| 100 g | Available to ship TODAYfromMILWAUKEE | $97.60 | |
| 500 g | Available to ship TODAYfromMILWAUKEE | $117.00 |
About This Item
Linear Formula:
SiO2
CAS Number:
Molecular Weight:
60.08
NACRES:
NA.23
PubChem Substance ID:
UNSPSC Code:
12352300
MDL number:
$79.10
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form
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.[1] 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.
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This Item | |||
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| form powder | form powder | form powder | form powder |
| density 2.3 lb/cu.ft at 25 °C (bulk density)(lit.) | density - | density 2.3 lb/cu.ft at 25 °C (bulk density)(lit.) | density - |
| Quality Level 200 | Quality Level 100 | Quality Level 200 | Quality Level - |
| reaction suitability core: silicon | reaction suitability - | reaction suitability - | reaction suitability - |
| refractive index n20/D 1.46 (lit.) | refractive index - | refractive index n20/D 1.46 (lit.) | refractive index - |
| surface area 395 m2/g (±25 m2/g) | surface area 175-225 m2/g | surface area 200 m2/g (±25 m2/g) | surface area - |
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Storage Class
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
Preparation and properties of TiO2/fumed silica composite photocatalytic materials
Yu Y, et al.
Procedia Engineering, 27, 448-456 (2012)
Melt rheology of organoclay and fumed silica nanocomposites
Ph. Cassagnau
Polymer, 49(9), 2183-2196 (2008)
Global Trade Item Number
| SKU | GTIN |
|---|---|
| S5130-500G | 04061836938284 |
| S5130-100G | 04061836937591 |
| S5130-25G | 04061836937706 |
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I am interested in silica fumed, but looking for a micro-size powder, currently do not want to work with nano particles. Does the silica come in micro size? I would like to use this product as a epoxy CTE filler.
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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/418/501/product-dating-information-06-25-mk.pdfHelpful?
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Are the particles hydrophobic or hydrophilic?
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This product has a hydrophilic surface.
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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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What is the size range of particles S5130 Silica, fumed?
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The particle size range of this material has not been determined. The maxumum particle size is 45 um or 325 Mesh. The calculated particle size is 7 nm, based on the density of 2.2 g/mL and surface area of 395 m2/g (±25 m2/g). However, fumed silica particles are fused together and do form aggregates.
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