CF4, Chinese name Carbon Tetrafluoride, Tetrafluoromethane, English name Carbon Tetrafluoride or Tetrafluoromethane, molecular formula CF4. Also known as R-14 refrigerant, alias R14, Freon 14, PFC-14, trade names Freon 14, etc.

Physicochemical properties of carbon tetrafluoride gases

At room temperature, tetrafluoromethane is a colorless, odorless, non-flammable, insoluble in water and compressible gas. Boiling point: -128℃, melting point: -183.6℃. Liquid density (-130℃) 1.613g/cm3, critical temperature -45.67℃, critical pressure 3.74Mpa, vapor pressure (-150.7℃) 13.33kPa, dielectric constant (25℃, 0.5Mpa) 1.0006. High volatility, is one of the most stable organic compounds, at 900 degrees Celsius, does not react with steel, nickel, tungsten, molybdenum, only at carbon arc temperature slowly decomposition, slightly soluble in water, at 25 degrees Celsius and 0.1Mpa, its solubility is 0.0015% (weight ratio)

Tetrafluoromethane does not burn in the air, is a relatively stable non-toxic substance. But at high temperatures, or when burned with combustible gases, they break down toxic fluoride. Carbonyl fluoride can be formed with carbon dioxide above 1000℃.