Merck
Todas as fotos(1)

18649

Sigma-Aldrich

Silicon dioxide

acid washed

Sinônimo(s):
Quartz, Silica, Cristobalite, Sand
Fórmula linear:
SiO2
Número CAS:
Peso molecular:
60.08
Número MDL:
ID de substância PubChem:
NACRES:
SB.52

Nível de qualidade

100

forma

solid

qualidade

acid washed

Impurezas

≤0.01% in acid soluble iron (Fe)
≤0.5% soluble in HCl

perda

≤0.5% loss on ignition, 800 °C

índice de refração

n20/D 1.544 (lit.)

pf

1610 °C (lit.)

densidade

2.6 g/mL at 25 °C (lit.)

traços de ânion

chloride (Cl-): ≤100 mg/kg

SMILES string

O=[Si]=O

InChI

1S/O2Si/c1-3-2

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Procurando produtos similares? Visit Guia de comparação de produtos

Descrição geral

Silicon dioxide (SiO2) exists in three crystalline forms, namely quartz, tridymite and cristobalite. It reacts with hydrofluoric acid to form silicon tetrafluoride (SiF4) and water. Silicates are formed on reacting SiO2 with alkali melts. SiO2 is the main component in glass, brick and concrete and also forms the insulator in silicon devices. The alteration of the surface of SiO2 with (3-aminopropyl)triethoxysilane (APTES) for binding lactate dehydrogenase (LDH) to form an amino layer has been reported. The silicon-silicon dioxide structure has been investigated at liquid nitrogen temperature by electron spin resonance spectra.

Aplicação

Silicon dioxide may be used to produce silicon by electrochemical reduction in the presence of calcium chloride (CaCl2) electrolyte. It may also be used to prepare FeCl3/SiO2, a supported reagent for the oxidative coupling reactions.

Código de classe de armazenamento

13 - Non Combustible Solids

WGK

nwg

Ponto de fulgor (ºF)

Not applicable

Ponto de fulgor (ºC)

Not applicable

Equipamento de proteção individual

Eyeshields, Gloves, type N95 (US)

Certificado de análise

Insira o número de lote para pesquisar o Certificado de análise (COA).

Certificado de origem

Insira o número de lote para pesquisar o Certificado de origem (COO).

Mais documentos

Quotes and Ordering

Iron trichloride/silicon dioxide reacts as oxidant or Lewis acid with phenol ethers.
Jempty TC, et al.
The Journal of Organic Chemistry, 46(22), 4545-4551 (1981)
Study of silicon-silicon dioxide structure by electron spin resonance I.
Nishi Y.
Japanese Journal of Applied Physics, 10(1), 52-52 (1971)
Electronic structure of silicon dioxide (a review).
Nekrashevich SS and Gritsenko VA.
Physics of the Solid State, 56(2), 207-222 (2014)
Eagleson M.
Concise Encyclopedia Chemistry, 983-984 (1994)
Surface modification of silicon dioxide, silicon nitride and titanium oxynitride for lactate dehydrogenase immobilization.
Saengdee P, et al.
Biosensors And Bioelectronics, 67, 134-138 (2015)

Nossa equipe de cientistas tem experiência em todas as áreas de pesquisa, incluindo Life Sciences, ciência de materiais, síntese química, cromatografia, química analítica e muitas outras.

Entre em contato com a assistência técnica