四氟化碳（Carbon tetrafluoride）.docVIP

四氟化碳（Carbon tetrafluoride） Tetrafluoride, also known as teflon, Freon 14 and R 14, is a halogenated hydrocarbon (chemical: CF4). It can be considered as a kind of halogenated hydrocarbon, halogenated methane, perfluorinated carbon, or as an inorganic compound. Below 198 ° C, carbon tetrafluoride has a monoclinal structure, lattice constant is a = 8.597, b = 4.433, C = 8.381 (. 10-1 nm), beta = 118.73 °. Orders to record 1 introduction 1.1 basic information 1.2 physical properties 1.3 history 1.4 chemical properties 1.5 environmental impact 1.6 synthesis method 2 application Three purposes 4 production 5 packing and shipping 6 safety 1. Introduction Carbon tetrafluoride, molecular formula is CF4, also known as perfluorocarbon The basic information Chinese name: tetrafluoride carbon [1] Chinese alias: tetrafluoromethane Carbon tetrafluoride Tetrafluoromethane CAS: 75-73-0 EINECS: 200-896-5 Molecular formula: CF4 Molecular weight: 88 Physical and chemical properties: - melting point: - 184 ℃ Relative density: -128 Solubility: - Purpose: plasma etching process for various integrated circuits, as well as laser gas and refrigerant Physical properties Melting temperature 183.6 ℃, Carbon tetrafluoride [2] Boiling point 128.1 ℃, The liquid density (1.613 g/cm3-130 ℃), Liquid refractive index (1.515-173 ℃), Solid transformation point 72.2 K, Critical temperature 45.67 ℃, Critical pressure 3.73 MPa, Critical density 7.1 dm3 per mole, Critical compression factor: 0.279 Van der Waals area (cm · mol) : 4.600 x 10 An der Waals volume (cm · mol) : 27.330 Lennard-jones parameter (A) : 4.5306 Lennard-jones parameter (K) : 158.90 Standard entropy of gas (j. mol · K) : 261.40 Gas phase standard thermal fusion (j. mol · K) : 61.05 Standard mole formation enthalpy - 932.31 kilojoules per mole, Standard molar generation entropy 261.04 J/(mol K), Standard molar free energy minus 929.84 kilojoules per mole, The standard molar generates the free energy - 887.41 kilojoules per mole. Market pr