637238

Sigma-Aldrich

Silicon dioxide

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

Sinônimo(s):
Silica, Silicon dioxide
Fórmula linear:
SiO2
Número CAS:
Peso molecular:
60.08
Número EC:
Número MDL:
ID de substância PubChem:
NACRES:
NA.23

Nível de qualidade

100

teor

99.5% trace metals basis

forma

nanopowder

tamanho de partícula

10-20 nm (BET)

pb

2230 °C (lit.)

pf

>1600 °C (lit.)

densidade

2.2-2.6 g/mL at 25 °C

densidade volumétrica

0.011 g/mL

SMILES string

O=[Si]=O

InChI

1S/O2Si/c1-3-2

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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Descrição geral

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.

Aplicação

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.

Embalagem

250, 500 g in poly drum
50 g in glass bottle

storage_class_code

11 - Combustible Solids

WGK Alemanha

nwg

Ponto de fulgor (ºF)

Not applicable

Ponto de fulgor (ºC)

Not applicable

Equipamento de proteção individual

dust mask type N95 (US), Eyeshields, Gloves

Certificado de análise

Certificado de origem

  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  4. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  5. Is Product 637238, Silica,crystalline?

    Our information indicates that product 637238 is amorphous.

  6. Does this product contain hydroxyl groups?

    We have not determined the presence of OH groups in this product, but it seems likely.  One can do FT-IR analysis on this product.

  7. What does "TEM" mean on the Specification Sheet?

    TEM stands for transmission electron microscopy.

  8. Have any papers cited use of Product 637238, Silica?

    One publication has specifically mentioned use of product 637238, in environmental research.

  9. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

  10. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Nanocomposite calcium alginate fibres containing SiO2 and bioglass
Bogun M, et al.
Spine, 12, 18-18 (2010)
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)
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)
Saisai Wei et al.
The international journal of biochemistry & cell biology, 113, 95-102 (2019-06-21)
ZnO nanoparticle (ZnO NP) exposure causes oxidative stress in the respiratory system, leading to pulmonary damage. Activating transcription factor 3 (ATF3) participates in a variety of cellular stress responses. However, the role of ATF3 in ZnO NP genotoxicity and cytotoxicity...
K E Kovalenko et al.
Ecological applications : a publication of the Ecological Society of America, 23(5), 1048-1060 (2013-08-24)
Boreal wetlands play an important role in global carbon balance. However, their ecosystem function is threatened by direct anthropogenic disturbance and climate change. Oil sands surface mining in the boreal regions of Western Canada denudes tracts of land of organic...
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