9002-84-0
| Name | Poly(tetrafluoroethylene) |
| CAS | 9002-84-0 |
| EINECS(EC#) | 204-126-9 |
| Molecular Formula | (C2F4)n |
| MDL Number | MFCD00084455 |
| MOL File | 9002-84-0.mol |
Synonyms
fn3
t5b
t8a
T 5B
T 8A
te30
l169
TL-R
TL-V
FT-4
FN 3
g163
PTFE
f103
f4mb
f4k20
Fluon
F 103
F 4MB
Aflon
G 163
unonp
tl102
L 169
TE 30
Unon P
TL 102
TL 115
TL 125
TL 126
TEFLON
F 4K20
fbf74d
f4zh20
FBF 74D
F 4Zh20
amip15m
fluong4
Valflon
Velflon
teflonk
Tarflen
Polytef
teflon5
teflon6
Polifen
Politef
halong80
Polyfene
Polyflon
teflon6c
teflon30
teflont5
teflont6
Teflon 5
Teflon 6
Teflon K
proplast
Ptfe-gm3
tetran30
PTFEFUME
Teflon60
fluongpi
fluoncd1
Gore-tex
ftorlon4
dixon164
DLX-6000
Amip 15M
Fluo-kem
Fluon G4
Fluon gpi
Fluon CDI
Fluon AD1
Algloflon
TEFLON 7A
bdh29-801
Dixon 164
ftorlon4m
Heydeflon
Hostaflon
fluong163
fluong201
fluonl169
fluonl170
fluonl171
Ftorlon 4
teflont30
Tetran 30
Teflon 6C
Teflon 30
Teflon T5
teflontfe
teflon110
halong183
halong700
Halon G 80
polyflond1
Teflon tfe
Teflon T 6
soreflon5a
Teflon 110
tetranptfe
Ftorlon 4M
Fluoroflex
Fluorolene
fluorolon4
Fluoromelt
fluonl169b
fluoncd023
fluoncd042
balfon7000
BDH 29-801
duroid5870
ek1108gy-a
algoflonsv
Fluon G163
Fluon G170
Fluon G201
Fluon AD1H
Fluon AD1L
Fluon cd 1
Fluon L 170
Fluon L 171
Fluon L 169
ethiconptfe
Algoflon sv
EK 1108GY-A
Emralon 304
Balfon 7000
Duroid 5870
Fluorolon 4
fluoropak80
Halon G 183
Halon G 700
ftoroplast4
Tetran ptfe
PTFE resins
PTFE POWDER
CEFRAL LUBE
soreflon604
Soreflon 5A
Teflon T 30
polyflonm12
polyflonm21
Polyflon D1
hostaflontf
molykote522
Molykote 522
halontfeg180
Polyflon M12
polyflonf103
polyflonm12a
Polyflon M21
Soreflon 604
CHROMOSORB T
ftoroplast4b
ftoroplast4d
ftoroplast4m
ftorlonf-4mb
Ftoroplast 4
Hostaflon tf
Fluoropak 80
TEFLON(TM) 6
Ethicon ptfe
Fluon L 169B
Fluon cd 023
Fluon cd 042
TEFLON(TM) 7A
Ftorlon F-4mb
fluoroplast4b
fluoroplast4d
fluoroplast4m
Ftoroplast 4B
Ftoroplast 4D
Ftoroplast 4M
ftoroplastf-4
zitexh662-124
zitexk223-122
Polyflon M12A
Fluoropolymer
Ground sockets
BRAND? stirrer
Polyflon F 103
Halon tfeg 180
PTFE=Teflon(R)
ftoroplastf4mb
ftoroplast4k20
Fluorosint 500
Ftoroplast F-4
Fluoroplast 4B
Fluoroplast 4D
Fluoroplast 4M
TEFLON(TM) 30B
alkathenerxdg33
Emralon 8301-01
fluoroporefp120
Ftoroplast 4K20
CHROMOSORB(R) T
ZITEX H 662-124
ZITEX K 223-122
hostaflontf2026
hostaflontf2053
polyflonek4108gy
PTFE dispersion
Ftoroplast F 4mb
ftoroplastfbf74d
Alkathene rxdg33
Sampling dippers
PTFE fine powder
PTFE micro powder
Hostaflon TF 1101
Hostaflon TF 1620
Hostaflon tf 2026
Hostaflon tf 2053
Hostaflon TF 2071
Hostaflon TF 5032
Fluoropore fp 120
Fluorocomp FC-101
Fluorocomp FC-144
Fluorocomp FC-174
Fluorocomp FC-182
Ftoroplast fbf 74D
polyflonek1108gy-a
Polyflon ek 4108gy
Conical joint clips
Fluorinated polymer
Crystallizing dishes
BRAND? ground socket
Polyflon ek 1108gy-A
Poly(tetrafluoroethy
Emralon 8301-01, 304
Electrafil TR-1900/EC
Fluon AD1, AD1L, AD1H
fluoroethylenepolymer
Polytetrafluoroethene
PTFE superfine powder
Conical joint stopper
Magnetic Stirring Bars
polytetrafluroethylene
poly(difluoromethylene)
POLYTETRAFLUOROSTHYLENE
POLYTETRAFLUOROETHYLENE
tetrafluoroethenepolymer
perfluoroethylenepolymer
Tetrafluoroethene polymer
TETRAFLUOROETHYLENE RESIN
BRAND? conical joint clip
PTFE)Poly(tetrafluoroethy
PTFE MOLDING POWDER RENSIN
BRAND? ground joint sleeve
tetrafluoro-ethylenpolymer
tetrafluoroethylenepolymer
tetrafluoroethylenepolymers
tetrafluoro-ethylenpolymers
poly(ethylenetetrafluoride)
Ethylenetetrafluoro-polymer
TETRAFLUOROETHYLENE OLIGOMER
Poly(ethylene tetrafluoride)
Polytetrafluoroethyleneresin
Tetrafluoroethylene polymers
tetrafluoroethenehomopolymer
tetrafluoro-ethenhomopolymer
Polytetrafluoroethylene film
POLY(TETRAFLUOROETHENE)FUMES
PTFE concentrationdispersion
Poly(tetrafluoroethylene) 5GR
PTFE PRESINTERED POWDER RESIN
Tetrafluoroethyl methyl ether
Tetrafluoroethene homopolymer
tetrafluoroethylenehomopolymer
Polytetrafluoroethylene resins
Tetrafluoroethylene homopolymer
Ethene,tetrafluoro-,homopolymer
Ethylene, tetrafluoro-, polymer
Poly(tetrafluoroethylene) 100GR
MOLDING PTFE FINE GRANULAR RESIN
POLYTETRAFLUOROETHYLENE OLIGOMER
Polytetrafluoroethylene emulsion
Poly(tetrafluoroethylene), powder
Ethene, tetrafluoro-, homopolymer
MOLDING PTFE FINE GRANULAR RENSIN
BRAND? sampling dipper with spout
Polytetrafluoroethylene preparatio
BRAND? magnetic stirring bar, PTFE
BRAND? forcep with rectangular ends
BRAND? stopcock T-bore with nozzles
POLYTETRAFLUOROETHYLENE PREPARATION
Polytetrafluoroethylene, 6-10 micron
teflon(polytetrafluoroethylene,ptfe)
BRAND? stopcock one-way with nozzles
poly(tetrafluoroethylene) fine powder
Poly(tetrafluoroethylene) beads, white
Polytetrafluoroethylene, aq. dispersion
Polytetrafluoroethylene beaker,products
Polytetrafluoroethylene resin,suspension
Polytetrafluoroethylene resin,dispersion
POLYTETRAFLUOROETHYLENE, 60 WT.% DISPER&
POLYTETRAFLUOROETHYLENE 60 WT. % &
polytetrafluoroethylene superfine powder
BRAND? extension rod for sampling dippers
Polytetrafluoroethylene powder,ultra-fine
Fluorocomp FC-101, FC-144, FC-174, FC-182
POLYTETRAFLUOROETHYLENE, POWDER, 35 MICRON
PTFE,Fluorinated polymer Fluoropolymer PTFE
Polytetrafluoroethylene Powder (Regenerated)
POLYTETRAFLUOROETHYLENE, POWDER, 100 MIC RON
Polytetrafluoroethylene resin,paste extrusion
Poly(tetrafluoroethylene), aqueous dispersion
BRAND? magnetic stirring bar, PTFE, crosshead
BRAND? magnetic stirring bar, PTFE, spherical
Polytetrafluoroethylene resin,suspension F104M
BRAND? magnetic stirring bar, PTFE, disc-shaped
BRAND? magnetic stirring bar, PTFE, double-ended
Polytetrafluoroethylene,dispersion liquid,general
Polytetrafluoroethylene preparation,PTFE dispersion
BRAND? crystallizing dish, cylindrical without spout
Poly(tetrafluoroethylene), 60 wt % dispersion in H2O
Poly(tetrafluoroethylene) powder, 35 MuM particle size
POLYTETRAFLUOROETHYLENE(SUSPENSIONMEDIUM-SIZEGRANULES)
Poly(tetrafluoroethylene) powder, >40 mum particle size
Poly(tetrafluoroethylene) powder, 200 mum particle size
Poly(tetrafluoroethylene) powder, >=350 mum particle size
BRAND? magnetic stirring bar, PTFE, round, with crosshead
Polytetrafluoroethylene preparation 60 wt % dispersion in H2O
BRAND? magnetic stirring bar, PTFE, triangular with pivot rim
Polytetrafluoroethylene dispersing liquid,concentrated dipping type
Poly(tetrafluoroethylene) powder (free-flowing), 1 MuM particle size
Poly(tetrafluoroethylene) powder (free-flowing), <=12 MuM particle size
polytetrafluoroethylene,poly(ethylenetetrafluoride),tetrafluoroethylenepolymer,tetrafluoroethylenehomopolymer
Chemical Properties
| Appearance | white powder, or white solid with a slippery feel |
| Melting point | 327 °C |
| Boiling point | 400 °C |
| density | 2.15 g/mL at 25 °C |
| refractive index | 1.35 |
| storage temp. | Store at -20°C |
| solubility | Solubility in water: |
| form | powder |
| color | white |
| Specific Gravity | 2 |
| Odor | at 100.00?%. odorless |
| Stability: | Stable-unreactive with most materials. Incompatible with molten alkali metals, fluorine and other halogens, strong oxidizing agents. |
| Water Solubility | Insoluble in water. Soluble in perfluoro kerosene. |
| Merck | 14,7562 |
| Dielectric constant | 2.0（Ambient） |
| Uses |
PTFE (polytetrafluoroethylene) is a bulking agent, it is also used in cosmetic preparations to improve the formulation’s feel and spreadability. PTFe may also have some waterproofing potential.
|
| IARC | 3 (Vol. 19, Sup 7) 1987 |
| NIST Chemistry Reference | Polytetrafluoroethylene, annealed(9002-84-0) |
| EPA Substance Registry System | Ethene, tetrafluoro-, homopolymer(9002-84-0) |
Safety Data
| Hazard Codes | Xi,T,Xn |
| Risk Statements | |
| Safety Statements | |
| WGK Germany | 3 |
| RTECS | KX4025000 |
| Hazard Note | Irritant |
| TSCA | Yes |
| HS Code | 39046100 |
| Safety Profile |
The finished polymerized compound is inert under ordinary condtions. There have been reports of “polymer fume fever” in humansexposed to pyrolysis products, whch also are irritants. Smohng should be prohibited in areas where ths material is being fabricated or, in general, where there may be dust from it. Exposure to pyrolysis or decomposition products appears to be the chief health-related problem. Questionable carcinogen with experimental tumorigenic data by implant. Incompatible with fluorine, sodmm potassium alloy. Under the proper conditions it undergoes hazardous reactions with boron, magnesium, or titanium. When heated to above 750°F it decomposes to yield highly toxic fumes of F-.
|
| Hazardous Substances Data | 9002-84-0(Hazardous Substances Data) |
Hazard Information
Chemical Properties
white powder, or white solid with a slippery feel
Uses
Inert lubricant.
Uses
polytetrafluoroethylene powder be used for plastic modification, average particle size is about 3-5 and 10-20 micrometer, PTFE has excellent performance, it has unique properties, including, no self-coagulation, no electrostatic effect, good intermiscibility, low molecular weight, good dispersion, high self-lubrication, low friction coefficient, etc.
Definition
ChEBI: A polymer composed of repeating tetrafluoroethyl groups.
Hazard
Evolves toxic fumes on heating. Question-
able carcinogen.
History
The polymerized form of TFE was discovered accidentally by researchers at DuPont in 1938. During the mid-1930s, DuPont was investigating the development of new chlorofl uorocarbons (CFCs) for use as refrigerants. DuPont joined with General Motors to form a company called Kinetic Chemicals to combine their efforts in this area. Plunkett examined the properties of the substance. He discovered that the substance was inert to other chemicals, had a high melting point, and was very slippery. Plunkett also worked on duplicating the conditions necessary to produce it from TFE. He applied for a patent for polytetrafl uoroethylene polymers in 1939, which was granted in 1941 (U.S. Patent 2230654). He assigned the patent to Kinetic Chemicals. DuPont registered the term Tefl on in 1945 and introduced Tefl on products the next year.
Teflon is best known for its use in cookware, but its use in this area followed original industrial applications in gaskets, sealers, tape, and electrical insulation. Th ese applications were a direct result of the use of PTFE for military purposes during World War II.
Teflon is best known for its use in cookware, but its use in this area followed original industrial applications in gaskets, sealers, tape, and electrical insulation. Th ese applications were a direct result of the use of PTFE for military purposes during World War II.
Production Methods
Polytetrafluoroethylene is generally made from tetrafluoroethylene
gas by free-radical polymerization under pressure
with oxygen, peroxides, or peroxydisulfates. The “granular
resins” have medium-size particles that range from 30 to
600 mm. Colloidal aqueous dispersions, made by a different
process, are concentrated to about 60% by weight of the
polymer and have particles that average about 0.2 mm.
Coagulated dispersions with agglomerates that average
450mm are also available .
The use of PTFE as a release agent in coatings and certain other food contact applications is permitted under FDA regulations .
The use of PTFE as a release agent in coatings and certain other food contact applications is permitted under FDA regulations .
General Description
Poly(tetrafluoroethylene) is a fluoropolymer that is commercially known as PTFE. Its properties include high thermal stability, excellent chemical resistance, low dielectric constant and low surface energy. It is a hydrophobic polymer that is majorly used as a protective coating on the metal surface.
Health Hazard
Fumes of heated polytetrafluoroethylene (PTFE) cause polymer fume fever,
an influenza-like syndrome.
Industrial uses
The polymer is insoluble, resistant to heat (upto 275°C) and chemical attack, and, in addition,has the lowest coefficient of friction of any solid.Because of its resistance to heat, the fabricationof polytetrafluoroethylene requires modificationof conventional methods. After molding thepowdered polymer using a cold press, the moldingsare sintered at 360 to 400°C by proceduressimilar to those used in powder metallurgy. Thesintered product can be machined or punched.Extrusion is possible if the powder is compoundedwith a lubricating material. Aqueoussuspensions of the polymer can also be used forcoating various articles. However, special surfacetreatments are required to ensure adhesionbecause polytetrafluoroethylene does not adherewell to anything.
Polytetrafluoroethylene (TFE resin) is usefulfor applications under extreme conditions ofheat and chemical activity. Polytetrafluoroethylenebearings, valve seats, packings, gaskets,coatings, and tubing can withstand relativelysevere conditions. Fillers such as carbon, inorganicfibers, and metal powders may be incorporatedto modify the mechanical and thermalproperties.
Because of its excellent electrical properties,polytetrafluoroethylene is useful when adielectric material is required for service at ahigh temperature. The nonadhesive quality isoften turned to advantage in the use of polytetrafluoroethyleneto coat articles such as rollsand cookware to which materials might otherwiseadhere.
Polytetrafluoroethylene (TFE resin) is usefulfor applications under extreme conditions ofheat and chemical activity. Polytetrafluoroethylenebearings, valve seats, packings, gaskets,coatings, and tubing can withstand relativelysevere conditions. Fillers such as carbon, inorganicfibers, and metal powders may be incorporatedto modify the mechanical and thermalproperties.
Because of its excellent electrical properties,polytetrafluoroethylene is useful when adielectric material is required for service at ahigh temperature. The nonadhesive quality isoften turned to advantage in the use of polytetrafluoroethyleneto coat articles such as rollsand cookware to which materials might otherwiseadhere.
Carcinogenicity
Animal studies have not demonstrated
that this polymer is carcinogenic. No data are
available in humans. The polymer is not classifiable as to
its human carcinogenicity. However, the EPA found that
perfluorooctanoic acid (PFOA), a chemical used to produce
PTEE is a “likely carcinogen.
Environmental Fate
PTFE is the most stable of all TFE polymers and under physiological
conditions does not release any components (IARC
Monograph 74, 1999). PTFE is very inert chemically; only alkali
metals and fluorine under pressure attack PTFE (Hazardous
Substances Data Bank (HSDB)). There are no known ecotoxicological
effects for PTFE (DuPont MSDS, 2011).
Toxicity evaluation
There is no apparent mechanism of toxicity for orally administered
PTFE as no toxicologically significant effects were
observed following oral administration to rats for up to
90 days. The lack of toxicity is most likely due to the following:
(1) gastrointestinal absorption of PTFE is negligible given its
extremely high molecular weight (1 000 000–10 000 000 for
PTFE fine powder); (2) PTFE is chemically inert under physiologic
conditions; and (3) PTFE is not metabolized (Donovan
et al., 1990; Kim, 1996; Veber et al., 2002). The mechanism
of action of subcutaneously injected PTFE in mice is attributed
to localized inflammation consistent with a foreignbody
response; similar effects were seen following subareolar
injection in rabbits and dogs, and periurethral injections
in dogs.
When PTFE is heated or exposed to temperatures ≥200°C, it will decompose and release toxic vapors that cause polymerfume fever in humans.
When PTFE is heated or exposed to temperatures ≥200°C, it will decompose and release toxic vapors that cause polymerfume fever in humans.
Questions And Answer
-
Description
Poly-(Tetrafluoroethylene) (PTFE, Brand name: Teflon, Fluon, Hostaflon, and Polyflon) is a kind of strong, tough, waxy and nonflammable synthetic resin. Its structure formula is [CF2-CF2]n with a carbon backbone chain. It is produced through the free-radical polymerization of tetrafluoroethylene. PTFE has slippery surface, high melting point, and is extremely chemically inert. This property make it have a lot of applications. Its biggest application is for the wiring in aerospace and computer applications due to its excellent dielectric properties, e.g. as the insulator in cables and connector. In industry, PTFE can be applied in places where sliding action of parts is required due to its low friction such as plain bearings, gears and slide plates. PTFE is also applied in the production of carbon fiber composites and fiberglass composites. In addition, owing to its chemical inertia and high thermal resistance, PTFE is applied in places where acids, alkalis or other chemical are used, e.g. as the liner in industrial pipe lines. ; -
Preparation
Poly(tetrafluoroethylene) is prepared from tetrafluoroethylene and consists of repeating units in a predominantly linear chain:
F2C=CF2 --->[-CF2-CF2-]n
Tetrafluoroethylene polymer has the lowest coefficient of friction of any solid. It has remarkable chemical resistance and a very low brittleness temperature (100C). Its dielectric constant and loss factor are low and stable across a broad temperature and frequency range. Its impact strength is high. ; -
References
http://pslc.ws/macrog/ptfe.htm
https://global.britannica.com/science/polytetrafluoroethylene
https://en.wikipedia.org/wiki/Polytetrafluoroethylene#Other ;
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