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637238

Sigma-Aldrich

Silicon dioxide

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

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
1.13126806951904376
Silicon dioxide nanopowder, 10-20 nm particle size (BET), 99.5% trace metals basis

Sigma-Aldrich

637238

Silicon dioxide

Silicon dioxide colloidal, highly dispersed, EMPROVE® ESSENTIAL, Ph. Eur., JP, NF, E 551

SAFC

1.13126

Silicon dioxide

Silica mesoporous, 3 μm particle size, pore size ~4 nm

Sigma-Aldrich

806951

Silica

Silica monodisperse, non-porous, 20 μm

Sigma-Aldrich

904376

Silica

assay

99.5% trace metals basis

assay

-

assay

99.9% trace metals basis

assay

-

form

nanopowder

form

solid

form

mesoporous, powder

form

powder

particle size

10-20 nm (BET)

particle size

-

particle size

3 μm

particle size

-

bp

2230 °C (lit.)

bp

2230 °C (lit.)

bp

2230 °C (lit.)

bp

2230 °C (lit.)

mp

>1600 °C (lit.)

mp

>1600 °C (lit.)

mp

>1600 °C (lit.)

mp

>1600 °C (lit.)

density

2.2-2.6 g/mL at 25 °C

density

-

density

-

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 Code

11 - Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

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