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FORMULA
H2[SiF6]
CAS# 16961-83-4
DESCRIPTION
Hexafluorosilicic acid is an inorganic compound with the chemical formula H ₂SiF ₆ also written as ₂[SiF ₆]. It is a colorless liquid mostly encountered as diluted aqueous solution, from there, the second chemical notation also proposed. Hexafluorosilicic acid has a distinctive sour taste and pungent smell.
PRODUCT INFORMATION
Molar mass: 144.09 g/mol
Formula: H2[SiF6]
Density: 1.22 g/cm³
Solubility in water: miscible
Boiling point: 108.5 °C (227.3 °F; 381.6 K) (decomposes)
Melting point: ca. 19 °C (66 °F; 292 K) (60–70% solution); < −30 °C (−22 °F; 243 K) (35% solution)
STRENGTHS & GRADES
Corrosive to metals and tissue. Both the fumes and very short
contact with the liquid can cause severe and painful burns. Used in water fluoridation, in
hardening cement and ceramics, as a wood preservative.
