4-tetrafluoroethylene

The nephrotoxic mode of action of tetrafluoroethylene is similar to that of hexachloro-butadiene. It is first metabolized to a cysteine conjugate, which is metabolized by cysteine conjugate /l-lyase to a reactive product that can bind to cellular macromolecules. [Pg.278]

Tarloff, J. B. Biochemical mechanisms of renal toxicity. In An Introduction to Biochemical Toxicology, 3rd ed., E. Hodgson and R. C. Smart, eds. New York Wiley, 2001, p. 641. Schnellmann R. G, Toxic Responses of the kidney. In Casarett and Doull s Toxicology The Basic Sciences of Poisons, 6th ed., C. D Klaassen, ed, New York McGraw-Hill, 2001, p. 491. [Pg.278]

Data were last reviewed in lARC (1979) and the compound was classified in lARC Monographs Supplement 7 (1987). [Pg.1143]

116-14-3 Chem. Abstr. Name Tetrafluoroethene lUPAC Systematic Name Tetrafluoroethylene [Pg.1143]

2 Structural and molecular formulae and relative molecular mass [Pg.1143]

Reactivity May polymerize in the absence of an inhibitor, especially when heated or in the presence of oxygen (United States National Library of Medicine, 1998) [Pg.1143]

MOLECULAR FORMULA = C2F4 MOLAR MASS = 100.0 g/mol COMPOSITION = C(24°/o) 0(76%) [Pg.275]

Tetrafluoroethylene (TFE), also known as perfluoroethylene, is a colorless, flammable, toxic gas. It is the monomer used for polytetrafluoroethylene (PTFE), which is sold under the DuPont tradename of Teflon. TFE is co-polymerized with other compounds to produce a variety of Teflons. TFE is produced by heating chlorodifluoromethane (CHC1F2, Freon-22) or trifluoromethane (CldF3, Freon-23). TFE is used almost exclusively as a monomer in the production of PTFE. PTFE is a vinyl polymer, which means it is made from a monomer with carbon-carbon double bonds. PTFE is made from TFE by free radical polymerization. [Pg.275]

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. These applications were a direct result of the use of PTFE for military purposes during World War II. [Pg.276]

A number of friction studies have been carried out on organic polymers in recent years. Coefficients of friction are for the most part in the normal range, with values about as expected from Eq. XII-5. The detailed results show some serious complications, however. First, n is very dependent on load, as illustrated in Fig. XlI-5, for a copolymer of hexafluoroethylene and hexafluoropropylene [31], and evidently the area of contact is determined more by elastic than by plastic deformation. The difference between static and kinetic coefficients of friction was attributed to transfer of an oriented film of polymer to the steel rider during sliding and to low adhesion between this film and the polymer surface. Tetrafluoroethylene (Telfon) has a low coefficient of friction, around 0.1, and in a detailed study, this lower coefficient and other differences were attributed to the rather smooth molecular profile of the Teflon molecule [32]. [Pg.441]

Tetrafluoroethylene. Emulsion polymerisation of tetrafluoroethylene, catalysed by oxygen, yields polytetrafluoroethylene (Tejlon) as a very tough horn-hke material of high melting point. It possesses excellent electrical insulation properties and a remarkable inertness towards all chemical reagents, including aqua regia. [Pg.1015]

Figure 12.1. Perfluoriiiated resinsulfonic acid similar to Nafion-H, showing clustering of SO3H groups PTFE = poly(tetrafluoroethylene).

Poly(tetmfluoroethylene). Poly(tetrafluoroethylene) is prepared from tetrafluoroethy-lene and consists of repeating units in a predominantly linear chain ... [Pg.1016]

Ethylene-Tetrafluoroethylene Copolymer. Ethylene-tetralluoroethylene copolymer consists of linear chains in which the repeating unit is... [Pg.1017]

Properties Homopolymer Copolymer 20% glass-reinforced homopolymer 25% glass-reinforced copolymer 21% poly(tetrafluoroethylene)- filled homopolymer... [Pg.1026]

Casting resin Novolac resin Poly(tetrafluoroethylene) Poly(chloro- trifluoro- ... [Pg.1034]

Fluorinated ethylene-propylene resin Poly(vinylidene fluoride) Ethylene-tetrafluoroethylene copolymer Ethylene- chlorotrifluoro- ethylene copolymer Cellulose- filled Glass-fiber- reinforced... [Pg.1036]

Class A conforms to specifications in ASTM E694 for standard taper stopcocks and to ASTM E287 for Teflon or poly-tetrafluoroethylene stopcock plugs. The 10-mL size meets the requirements for ASTM D664. ... [Pg.1180]

TFE copolymers pLUORINE COMPOUNDS, ORGANIC - TETRAFLUOROETHYLENE-ETHYLENE COPOLYTffiRS] (Vol 11) -vinyl fluoride from pLUORINE COMPOUNDS, ORGANIC - POLY(VINYL FLUORIDE)] (Vol 11)... [Pg.378]

FLUORINECOMPOUNDS,ORGANIC - TETRAFLUOROETHYLENE-PERFLUOROVINYLETHERCOPOLYTffiRS] (Vol 11) Per(fluoroalkyl) polyethers... [Pg.735]

POWDERS,PiANDLING - DISPERSION OF POWDERS IN LIQUIDS] (Vol 19) Poly(tetrafluoroethylene)... [Pg.795]

FLUORINECOPPPOUNDS,ORGANIC - FLUORINAPED ALIPPiATIC COPPPOUNDS] (Vol 11) Poly(tetrafluoroethylene-co-perfluoro(methyl vinyl ether)... [Pg.795]

Teflon PFA [FLUORINE COMPOUNDS, ORGANIC - TETRAFLUOROETHYLENE-PERFLUOROVINYLETHEPvCOPOLYMERS] (Vol 11)... [Pg.807]

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