01302

Fluosilicic acid

purum, 33.5-35%

• Sinônimo(s): Fluorosilicic acid, Hexafluorosilicic acid, Hydrogen hexafluorosilicate
• Fórmula linear: H₂SiF₆
• Número CAS: 16961-83-4
• Peso molecular: 144.09
• Número MDL: MFCD00036289
• Código UNSPSC: 12352300
• eCl@ss: 38130308
• ID de substância PubChem: 57646695
• NACRES: NA.21

Propriedades

• grau: purum
• Nível de qualidade: 200
• concentração: 33.5-35%
• Impurezas: ≤0.003% heavy metals (as Pb)
• densidade: 1.22 g/mL at 20 °C (lit.); 1.31 g/mL at 25 °C
• traços de ânion: chloride (Cl^-): ≤0.2%; phosphate (PO₄^3-): ≤1000 mg/kg; sulfate (SO₄^2-): ≤0.2%
• traços de cátion: Fe: ≤100 mg/kg
• cadeia de caracteres SMILES: F.F.F[Si](F)(F)F
• InChI: 1S/F4Si.2FH/c1-5(2,3)4;;/h;2*1H
• chave InChI: ZEFWRWWINDLIIV-UHFFFAOYSA-N

Descrição

Descrição geral

High-silic fluoro silicic acids have been prepared. They have desired amount of extra silica upto 18% more than the composition as represented by H₂SiF₆. Preparation and properties of fluosilicic acid have been reported. Fluosilicic acid can be obtained as a major byproduct of phosphate fertilizer industry.It can be used in the preparation of sodium fluorosilicate, via neutralization with sodium chloride. It can also undergo neutralization with ammonia to produce ammonium fluoride and silica.

Aplicação

Fluosilicic acid (FSA, H₂SiF₆) has been used in the following studies:

• Fluoridation of fluoridated municipal water supplies.
• Surface modification of calcium carbonate.
• Liquid phase deposition (LPD) of silica.

Informações de segurança

• Pictogramas: GHS06,GHS05
• Palavra indicadora: Danger
• Frases de perigo: H302,H311,H314
• Declarações de precaução: P270 - P280 - P301 + P312 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Classificações de perigo: Acute Tox. 3 Dermal - Acute Tox. 4 Oral - Eye Dam. 1 - Skin Corr. 1
• Código de classe de armazenamento: 6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• Classe de risco de água (WGK): WGK 2
• Ponto de fulgor (°F): Not applicable
• Ponto de fulgor (°C): Not applicable
• Equipamento de proteção individual: Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter