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637238

Sigma-Aldrich

Silicon dioxide

nanopowder, 10-20 nm particle size (BET), 99.5% trace metals basis

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Synonym(s):
Silica, Silicon dioxide
Linear Formula:
SiO2
CAS Number:
Molecular Weight:
60.08
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

Quality Level

assay

99.5% trace metals basis

form

nanopowder

particle size

10-20 nm (BET)

bp

2230 °C (lit.)

mp

>1600 °C (lit.)

density

2.2-2.6 g/mL at 25 °C

bulk density

0.011 g/mL

SMILES string

O=[Si]=O

InChI

1S/O2Si/c1-3-2

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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This Item
637246718483805467
Silicon dioxide nanopowder, 10-20 nm particle size (BET), 99.5% trace metals basis

637238

Silicon dioxide

Silicon dioxide nanopowder (spherical, porous), 5-20 nm particle size (TEM), 99.5% trace metals basis

637246

Silicon dioxide

Silica nanopowder, 99.8% trace metals basis

718483

Silica

Silica mesoporous MCM-48, 15 μm particle size, pore size 3 nm, Cubic pore morphology

805467

Silica

particle size

10-20 nm (BET)

particle size

5-20 nm (TEM)

particle size

-

particle size

15 μm

assay

99.5% trace metals basis

assay

99.5% trace metals basis

assay

99.8% trace metals basis

assay

99.9% trace metals basis

mp

>1600 °C (lit.)

mp

>1600 °C (lit.)

mp

>1600 °C (lit.)

mp

>1600 °C (lit.)

bp

2230 °C (lit.)

bp

2230 °C (lit.)

bp

2230 °C (lit.)

bp

2230 °C (lit.)

bulk density

0.011 g/mL

bulk density

0.068 g/mL

bulk density

-

bulk density

-

General description

The refractive index of silica nanoparticles is similar to polymeric coatings, so it finds several applications in the preparations of nanocomposites. Properties suh as, thermal resistance, electrical and mechanical are enhanced. Silica nanoparticles find uses in various fields of catalysts, pigment stabilization, electronics and sensors.

Application

Silica nanoparticles have been used :
  • To study the nonlinear optical properties of SiO2 nanocomposites in weak optical fields.
  • As a nanoadditive in nanocomposite calcium alginate fibers.
  • As dispersant in liquid polymethylsiloxane to exihibit unique optical non linearity in low intensity visible radiation fields.

Storage Class

11 - Combustible Solids

wgk_germany

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves


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-
25G
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705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

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APS-silane modification of silica nanoparticles: effect of treatm,ent's variables on the grafting content and colloidal stability of nanoparticles
Journal of Coatings Technology and Research, 11(4), 651-660 (2014)
Unusual nonlinear optical properties of SiO2 nanocomposite in weak optical fields
Milichko VA, et al.
Applied Physics. A, Materials Science & Processing, 111(1), 319-322 (2013)
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