Areia, quartzo branco washed and calcined, analytical reagent

Sinônimo(s):

Dióxido de silício, Quartzo

Fórmula linear:

SiO₂

Número CAS:

14808-60-7

Peso molecular:

60.08

Número EC:

238-878-4

Número MDL:

MFCD00011232

ID de substância PubChem:

57648586

NACRES:

SB.52

forma

granular

qualidade

washed and calcined, analytical reagent

Impurezas

≤0.2% Soluble in HCl

perda

≤0.1% loss on ignition

granulação

0.1-0.5 mm (min.70%)

traços de ânion

chloride (Cl^-): ≤100 mg/kg

SMILES string

O=[Si]=O

InChI

1S/O2Si/c1-3-2

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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.[1] SiO₂ is the main component in glass, brick and concrete and also forms the insulator in silicon devices.[2] 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.[3] The silicon-silicon dioxide structure has been investigated at liquid nitrogen temperature by electron spin resonance spectra.[4]

Aplicação

Silicon dioxide may be used to produce silicon by electrochemical reduction in the presence of calcium chloride (CaCl₂) electrolyte.[5]