31623

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 CE: 238-878-4
• Número MDL: MFCD00011232
• Código UNSPSC: 12352300
• ID de substância PubChem: 57648586
• NACRES: SB.52

Propriedades

• 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
• cadeia de caracteres SMILES: O=[Si]=O
• InChI: 1S/O2Si/c1-3-2
• chave InChI: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Descrição

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.

Informações de segurança

• Código de classe de armazenamento: 13 - Non Combustible Solids
• Classe de risco de água (WGK): nwg
• Ponto de fulgor (°F): Not applicable
• Ponto de fulgor (°C): Not applicable
• Equipamento de proteção individual: dust mask type N95 (US), Eyeshields, Gloves