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Other names: Silane, tetrafluoro-; Silicon fluoride (SiF4); Tetrafluorosilane; SiF4; Silicon fluoride; UN 1859. Permanent link for this species. Use this link for bookmarking this species for future reference. Information on this page: Phase change data. Reaction thermochemistry data. Gas phase ion energetics data.
This colorless gas is notable for having a narrow liquid range: its boiling point is only 4 °C above its melting point. It was first prepared in 1771 by Carl Wilhelm Scheele by dissolving silica in hydrofluoric acid, [5] and later synthesized by John Davy in 1812. [6] It is a tetrahedral molecule and is corrosive. [7]
Silicon tetrafluoride. Formula: F 4 Si. Molecular weight: 104.0791. IUPAC Standard InChI:InChI=1S/F4Si/c1-5 (2,3)4 Copy.
S° gas,1 bar: Molar entropy at standard conditions (1 bar) (J/mol×K). T boil: Normal Boiling Point Temperature (K). T c: Critical Temperature (K). 1: Molecular weight from the IUPAC atomic weights tables.
29 Απρ 2024 · Chemical formula sif4. Molecular weight 104.08. Colorless gas, asphyxiating odor, toxic! Melting Point -90.2 °c, boiling point -86 °c, -95.2 °c sublimation. Critical temperature -14.15 °c. Critical pressure 3.715MPA. The relative density was 4.69. Soluble in anhydrous ethanol, hydrofluoric acid and nitric acid, insoluble in ether.
The boiling point of a substance is the temperature at which it can change state from a liquid to a gas throughout the bulk of the liquid. The boiling point is defined as the temperature at which the saturated vapor pressure of a liquid is equal to the surrounding atmospheric pressure. Some fuels and their boiling points at atmospheric pressure:
Silicon tetrafluoride or tetrafluorosilane is a chemical compound with the formula Si F 4. This colorless gas is notable for having a narrow liquid range: its boiling point is only 4 °C above its melting point.
