Catalog Number
ACM9002840-5
Description
Tetrafluoroethylene, stabilized appears as a colorless odorless gas. Easily ignited. Vapors are heavier than air. May asphyxiate by the displacement of air. May violently polymerize under prolonged exposure to fire or heat, violently rupturing the container. Under prolonged exposure to fire or heat the containers may rupture violently and rocket. Water insoluble.;GasVapor;COLOURLESS ODOURLESS GAS.;Colorless, odorless gas.
IUPAC Name
1,1,2,2-tetrafluoroethene
Molecular Weight
100.01g/mol
Molecular Formula
C2F4;C2F4;C2F4
Canonical SMILES
C(=C(F)F)(F)F
InChI
InChI=1S/C2F4/c3-1(4)2(5)6
InChI Key
BFKJFAAPBSQJPD-UHFFFAOYSA-N
Boiling Point
-105.3 °F at 760 mm Hg (NTP, 1992);-75.9 °C;-19.9 °C;-75.9 °C;-75.9 °C;-105.3°F
Melting Point
-224.5 °F (NTP, 1992);-142.5 °C;-89.0 °C;Melts to an extremely viscous gel at 327 °C;-131.15 °C;-131.2 °C;-224.5°F
Flash Point
<32 °F (<0 °C) (closed cup) /Tetrafluoroethylene, inhibited/
Density
1.519 at -105 °F (NTP, 1992);2.2 g/cu cm;1.519 g/cu cm at -76 °C;Density (at -76 °C): 1.5 g/cm³;1.519 at -105°F
Solubility
Insoluble (NTP, 1992);0.00 M;No substance has been found which will dissolve the polymer at moderate temperatures;In water, 1.59X10+2 mg/L at 25 °C;Solubility in water, mg/l at 25 °C: 159 (very slightly soluble)
Application
PTFE, or polytetrafluoroethylene, is a versatile material primarily designed to enhance product formulations and improve usability. Appearing as a white powder or solid with a smooth, slippery texture, PTFE is notable for its unique properties derived from its chemical structure. Composed of long chains of carbon atoms surrounded by protective fluorine atoms, it offers exceptional stability and resistance to chemical attack, high heat (up to 275°C), and low friction. This makes PTFE extremely useful in various applications, especially under harsh conditions. In cosmetics, it serves as a bulking agent that enhances the feel and spreadability of products, while in other domains like cookware and industrial components, its non-adhesive nature is exploited to prevent sticking. Its electrical insulation capabilities make it ideal for use as a dielectric material in high-temperature environments. PTFE is produced through the polymerization of the monomer tetrafluoroethylene (TFE) and can be molded and machined into various forms, though special treatments are needed to ensure adhesion in coatings. Additionally, its mechanical and thermal properties can be further tailored by incorporating fillers such as carbon and metal powders.
Color/Form
White translucent to opaque solid;Soft, waxy, milk-white solid;White solid;Colorless gas
Covalently-Bonded Unit Count
1
EC Number
204-126-9;618-337-2
Log P
log Kow = 1.21 (est);1.21 (estimated)
MeSH Entry Terms
tetrafluoroethene;tetrafluoroethylene;tetrafluoroethylene, ion(1+);tetrafluoroethylene, ion(1-)
Monoisotopic Mass
99.993613g/mol
Other Experimental
Not wetted by water; subject to cold flow at high pressure;Useful temp range cryogenic to +260 °C; Reverts to gaseous monomer at temperatures above 400 °C; Shore hardness 55-56; Tensile strength 3500-4500 psi; Flexural modulus about 80,000-90,000 psi at room temperature; Brittle point below -80 °C; Dielectric constant: 2.0-2.05 at 60 to 3X10+9 cycles;Waxy, slippery feel;A highly stable theromplastic tetrafluoroethylene homopolymer. Composed of at least 20,000 CF2 monomer units linked into very long unbranched chains. Not affected by water, aqua regia, chlorosulfonic acid, acetyl chloride, boron fluoride, hot nitric acid, boiling solutions of sodium hydroxide and organic solvents.;Low coefficient of friction; upon heating, weight loss varies from 0.001%/hr at 290 °C to 4%/hr at 450 °C;Only alkali metals and fluorine under pressure attack Teflon below 300 °C;Spun in molten state; density of threads about 2.3; breaking stress can reach 40 kg/sq mm with approx 30% elongation;Does not carbonize in air at 700 °C; at 400 °C = 0.0002% weight loss/hr, at 500 °C = 0.0002% weight loss/hr; at 600 °C = 0.0002% weight loss/hr; at 680 °C = 0.001% weight loss/hr; at 734 °C = 0.006% weight loss/hr; at 788 °C = 0.09% weight loss/hr;Melts to an extremely viscous gel at 327 °C and reverts to the gaseous monomer at temperatures above 400 °C;ODORLESS OR FAINT ODOR; CRITICAL TEMP: 92 °F= 33 °C= 306 DEG K; HEAT OF POLYMERIZATION: -450 BTU/LB= 250 CAL/G= -10.5X10+5 JOULES/KG; CRITICAL PRESSURE: 573 PSIA= 38.9 ATM= 3.95 MN/SQ M; HEAT OF COMBUSTION: -4,000 BTU/LB= -2,000 CAL/G= -90X10+5 JOULES/KG /INHIBITED/;Much heavier than air;Critical density = 0.58 g/cu cm; Heat of evaporation = 16,821 J/mol at -75.6 °C;Henry's Law constant = 0.629 atm-cu m/mol at 25 °C (est);Hydroxyl radical reaction rate constant = 1.13X10-11 cu cm/molec-sec at 298 K;Ozone reaction rate constant = 4.80X10-21 cu cm/molec-sec at 298 K;Nitrate radical reaction rate constant = <3X10-15 cu cm/molec-sec at 298 K
Stability
Stable under recommended storage conditions.;The finished polymerized compound is inert under ordinary conditions.
UN Number
1081;1081;1081;1081
Vapor Density
3.87 (NTP, 1992) (Relative to Air);3.87 (Air = 1);Relative vapor density (air = 1): 3.9;3.87
Vapor Pressure
22800 mm Hg at 70 °F (NTP, 1992);2.45e+04 mmHg;2.45X10+4 mm Hg at 25 °C /extrapolated/;Vapor pressure, kPa at 20 °C: 2947;22800 mmHg at 70°F
