Catalog Number
ACM9002840-10
Product Name
Polytetrafluoroethylene
Synonyms
TETRAFLUOROETHYLENE OLIGOMER;TETRAFLUOROETHYLENE RESIN;TEFLON;TEFLON 7A;TEFLON(TM) 30B;TEFLON(TM) 6;TEFLON(TM) 7A;POLYTETRAFLUOROETHYLENE
Description
(PTFE), powder, mean particle size 20micron, weight 500 g
IUPAC Name
1,1,2,2-tetrafluoroethene
Molecular Weight
100.01g/mol
Molecular Formula
(CF2CF2)n
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
Polytetrafluoroethylene (PTFE) serves a wide array of purposes due to its exceptional physical and chemical properties. Made from the polymerization of tetrafluoroethylene, PTFE is a white, slippery solid known for its low friction and resistance to heat and chemical attack. These properties make it an ideal choice for applications requiring stability under extreme conditions. It is widely used in industries to create bearings, valve seats, packings, gaskets, coatings, and tubing that can withstand harsh environments. Additionally, PTFE is invaluable in the cosmetics industry as a bulking agent and for improving the feel and spreadability of products. Its waterproofing potential further enhances its applicability. PTFE's non-adhesive nature is also leveraged in coating applications, such as for cookware, to prevent material adherence. With excellent electrical properties, it is a preferred material when a high-temperature dielectric is necessary.
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
Oshima, Akihiro, et al. Scientific reports, 2021, 11, 1, 10907.
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