1,1,2,2-tetrafluorethylene (C₂F₄)

1,1,2,2-tetrafluorethylene (C₂F₄)

Colorless, odorless gas, the monomer of teflon.



tetrafluorethylene, teflon, alkyl halide, halogen containing organic compound, polymerisation, monomer, polymer, heat resistant, organic chemistry, chemistry

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Tetrafluorethylene C₂F₄


Molar mass: 100.2 g/mol

Melting point: -131.15 °C (-204.07 °F)

Boiling point: -75.9 °C (-104.62 °F)

Density: 1.519 g/cm³ (0.055 lb/in³)


1,1,2,2-tetrafluorethylene is a monomer of teflon. It is a colorless, odorless, flammable gas. It participates in typical alkene reactions, such as addition and polymerization. It reacts intensely with chlorine at room temperature, in the presence of light. It forms explosive peroxides with oxygen.

Due to its tendency toward self-polymerization, tetrafluorethylene must be kept with a stabilizer, away from air.

Occurrence and production

Tetrafluorethylene is produced during the pyrolysis of difluorochloromethane at a temperature of 600-800 °C (1,112-1,472 °F).


Tetrafluorethylene is used in the production of teflon.

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Ethene (ethylene) (C₂H₄)

The first member in the homologous series of 1-alkenes.

Hydrogen-fluoride (HF)

One of the hydrogen halides, a highly aggressive substance - it even attacks glass.

Polymerization of ethene

Polymerized ethylene is known as polyethylene, a type of plastic.


Addition is a reaction in which the molecules of two or more substances unite without the formation of a by-product.

Fluorine (F₂)

The lightest halogen, a pale yellow-green, toxic gas, extremely reactive. Its best known compound is teflon.

Boron trifluoride (BF₃)

Colorless, heavier-than-air gas with a pungent odor. It forms white fumes in moist air.

Comparison of halogens

Halogen elements are a group in the periodic table consisting of five chemically related elements, fluorine, chlorine, bromine, iodine, and astatine.

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