Polytetrafluoroethylene

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Catalog Number
ACM9002840-10
Product Name
Polytetrafluoroethylene
Structure
Structure
CAS
9002-84-0
Category
Polymer/Macromolecule
Description
(PTFE), powder, mean particle size 20micron, weight 500 g
Synonyms
TETRAFLUOROETHYLENE OLIGOMER;TETRAFLUOROETHYLENE RESIN;TEFLON;TEFLON 7A;TEFLON(TM) 30B;TEFLON(TM) 6;TEFLON(TM) 7A;POLYTETRAFLUOROETHYLENE
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)
Alpha Sort
Polytetrafluoroethylene
Autoignition Temperature
370 °F (USCG, 1999);370 °F (188 °C) /Tetrafluoroethylene, inhibited/;188 °C
Color/Form
White translucent to opaque solid;Soft, waxy, milk-white solid;White solid;Colorless gas
Complexity
55.6
Covalently-Bonded Unit Count
1
Decomposition
[Table#2253];When heated to above 750 °F, decomposes to yield highly toxic fumes of fluorides.;[Table#2254];When heated to decomposition it emits highly toxic fumes of /fluorine/.;Decomposes explosively under pressures greater than 2025 mm Hg (2.66 atm). /Tetrafluoroethylene, inhibited/
EC Number
204-126-9;618-337-2
Exact Mass
99.993613g/mol
Form
powder
Formal Charge
0
H-Bond Acceptor
4
H-Bond Donor
0
Heavy Atom Count
6
ICSC Number
1779
LogP
log Kow = 1.21 (est);1.21 (estimated)
Monoisotopic Mass
99.993613g/mol
Odor
Odorless
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
Rotatable Bond Count
0
Stability
Stable under recommended storage conditions.;The finished polymerized compound is inert under ordinary conditions.
UNII
OMW63Z518S
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
XLogP3
1.3
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