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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 ]
Chemical Properties of Silicon tetrafluoride (CAS 7783-61-1) PAff : Proton affinity (kJ/mol). BasG : Gas basicity (kJ/mol). SProt : Protonation entropy at 298K (J/mol×K). ΔfH°gas : Enthalpy of formation at standard conditions (kJ/mol).
Silicon tetrafluoride. Silicon tetrafluoride. Formula: F 4 Si. Molecular weight: 104.0791. IUPAC Standard InChI:InChI=1S/F4Si/c1-5 (2,3)4 Copy. IUPAC Standard InChIKey:ABTOQLMXBSRXSM-UHFFFAOYSA-N Copy.
Boiling point (°C) K b (°C⋅kg/mol) Freezing point (°C) K f (°C⋅kg/mol) Data source ... Ethanol: 0.78 78.4 1.22 –114.6 –1.99 K b [2] Ethylene bromide: 2.18 133 6.43 ... Naphthalene: 217.9 78.2 –6.80 Nitrobenzene: 210.8 5.24 5.7 –7.00 Phenol: 181.75 3.60 43.0 –7.27 K f [2] K b [1] Water: 100.00 0.512 0.00 –1.86 K b & K f [2 ...
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.
Silicon tetrafluoride | SiF4 or F4Si | CID 24556 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.
Boiling Points of Alcohols. The oxygen in alcohols and phenols is sp 3 hybridized which gives the roughly the same tetrahedral geometry as water. The bond angle of methanol (108.5 o) is slightly less than the tetrahedral value mainly due to the presence of its lone pair electrons.
