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**Systematic name:** Tetrafluoroethene
**Molecular formula:** C₂F₄
**Chemical formula (condensed):** CF₂=CF₂
**Molar mass:** 100,02 g/mol
**Use:** Tetrafluoroethylene is polymerized to polytetrafluoroethylene (PTFE) on the base unit [ -CF₂-], which is the essence of Teflon plastic.
**Properties of Teflon:** Teflon has a very high melting point and an excellent chemical resistance, it is non-flammable and has self-lubricating properties. It has neither lipophilic nor hydrophilic character, so the food does not burn the Teflon surface.