Areia, Quartzo Branco - 6 X 1.000 Gr - Sigma
Código: 20735
Areia, quartzo branco washed and calcined, analytical reagent
Sinônimo(s):
Dióxido de silício, Quartzo
Fórmula linear:
SiO2
Número CAS:
Peso molecular:
60.08
Número EC:
Número MDL:
ID de substância PubChem:
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]