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S5130

Sigma-Aldrich

Silica, fumed

powder

Synonym(s):

Silica, Silicic anhydride, Silicon dioxide, Silicon dioxide amorphous

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500 ML
¥434.58
1 L
¥700.66
6 X 500 ML
¥2,085.93
24 X 500 ML
¥7,822.27

¥434.58

Available to ship on2025年4月16日Details

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500 ML
¥434.58
1 L
¥700.66
6 X 500 ML
¥2,085.93
24 X 500 ML
¥7,822.27

About This Item

Linear Formula:
SiO2
CAS Number:
112945-52-5
Molecular Weight:
60.08
MDL number:
MFCD00011232
UNSPSC Code:
12352300
PubChem Substance ID:
57654622
NACRES:
NA.23

¥434.58

Available to ship on2025年4月16日Details

Request a Bulk Order

form

powder

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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Show Differences

1 of 4

This Item
116807541281644927
3-Chloroperbenzoic acid ≤77%

273031

3-Chloroperbenzoic acid

3-Phenylbutyric acid 98%

116807

3-Phenylbutyric acid

Methaneseleninic acid 95%

541281

Methaneseleninic acid

3-Methylpyrazole-5-carboxylic acid 97%

644927

3-Methylpyrazole-5-carboxylic acid

reaction suitability

reagent type: oxidant

reaction suitability

-

reaction suitability

-

reaction suitability

-

Quality Level

200

Quality Level

100

Quality Level

100

Quality Level

-

mp

69-71 °C (lit.)

mp

35-38 °C (lit.)

mp

128-132 °C (lit.)

mp

236-240 °C (lit.)

storage temp.

2-8°C

storage temp.

-

storage temp.

-

storage temp.

-

form

solid

form

solid

form

-

form

solid

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 Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves
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    Certificates of Analysis (COA)

    Lot/Batch Number
    0000435924
    0000435923
    0000435922
    0000435922
    0000435923

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    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
    Zheng O, et al.
    Energy Procedia, 16 Part B, 1211-1219 (2012)
    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)
    View All Related Papers

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