| Formula / Notation | (C2F4)n |
|---|---|
| CAS Number | 9002-84-0 |
| Molecular Weight | Variable (polymer) |
| Melting Point | 327 °C |
| Boiling Point | Decomposes >400 °C |
| Density | 2.10–2.20 g/cm³ |
| Solubility | Insoluble in all solvents |
| Appearance | white waxy solid |
| Also Known As | PTFE; Teflon; fluon; halon |
| Category | Polymers & Plastics |
What is Polytetrafluoroethylene?
Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer consisting of tetrafluoroethylene monomers (–CF₂–CF₂–)n. It is best known under the DuPont trade name Teflon. PTFE has one of the lowest coefficients of friction of any solid material, is chemically inert to virtually all industrial chemicals and solvents, and is stable over an extremely wide temperature range. Its exceptional properties arise from the strength of the carbon–fluorine bonds and the fluorine shielding of the carbon backbone.
Formula & Notation
IUPAC Name: poly(tetrafluoroethylene)
Other Names / Synonyms: PTFE; Teflon; fluon; halon
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | 327 °C |
| Boiling Point | Decomposes >400 °C |
| Density | 2.10–2.20 g/cm³ |
| Molecular Weight | Variable (polymer) |
| Solubility | Insoluble in all solvents |
| Appearance | white waxy solid |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer consisting of tetrafluoroethylene monomers (–CF₂–CF₂–)n. It is best known under the DuPont trade name Teflon. PTFE has one of the lowest coefficients of friction of any solid material, is chemically inert to virtually all industrial chemicals and solvents, and is stable over an extremely wide temperature range. Its exceptional properties arise from the strength of the carbon–fluorine bonds and the fluorine shielding of the carbon backbone.
Non-stick cookware coatings. Chemical-resistant gaskets, seals, and tubing. Electrical insulation for high-frequency cables. Bearings and bushings. Medical implants and vascular grafts. Plumber's thread seal tape.
PTFE itself is non-toxic and biologically inert. Pyrolysis above 260 °C releases toxic fluorinated gases and PFIB (perfluoroisobutylene). Avoid overheating in cookware applications. Polymer fume fever can result from breathing fumes. Consult SDS before processing.
The formula or notation for Polytetrafluoroethylene is: (C2F4)n