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  2. 1,1-Difluoroethane - Wikipedia

    en.wikipedia.org/wiki/1,1-Difluoroethane

    1,1-Difluoroethane, or DFE, is an organofluorine compound with the chemical formula C 2 H 4 F 2. This colorless gas is used as a refrigerant, where it is often listed as R-152a (refrigerant-152a) or HFC-152a ( hydrofluorocarbon -152a). It is also used as a propellant for aerosol sprays and in gas duster products.

  3. Polytetrafluoroethylene - Wikipedia

    en.wikipedia.org/wiki/Polytetrafluoroethylene

    Polytetrafluoroethylene. Polytetrafluoroethylene ( PTFE) is a synthetic fluoropolymer of tetrafluoroethylene, and has numerous applications because it is chemically inert. The commonly known brand name of PTFE-based composition is Teflon by Chemours, [ 1] a spin-off from DuPont, which originally discovered the compound in 1938.

  4. Fluoropolymer - Wikipedia

    en.wikipedia.org/wiki/Fluoropolymer

    Fluoropolymer. A fluoropolymer is a fluorocarbon -based polymer with multiple carbon–fluorine bonds. It is characterized by a high resistance to solvents, acids, and bases. The best known fluoropolymer is polytetrafluoroethylene under the brand name "Teflon," trademarked by the DuPont Company.

  5. DuPont - Wikipedia

    en.wikipedia.org/wiki/DuPont

    DuPont. DuPont de Nemours, Inc., commonly shortened to DuPont, is an American multinational chemical company first formed in 1802 by French-American chemist and industrialist Éleuthère Irénée du Pont de Nemours. The company played a major role in the development of the U.S. state of Delaware and first arose as a major supplier of gunpowder.

  6. 1,1,1,2-Tetrafluoroethane - Wikipedia

    en.wikipedia.org/wiki/1,1,1,2-Tetrafluoroethane

    Uses. 1,1,1,2-Tetrafluoroethane is a non-flammable gas used primarily as a "high-temperature" refrigerant for domestic refrigeration and automobile air conditioners. These devices began using 1,1,1,2-tetrafluoroethane in the early 1990s as a replacement for the more environmentally harmful R-12. Retrofit kits are available to convert units that ...

  7. Trichlorofluoromethane - Wikipedia

    en.wikipedia.org/wiki/Trichlorofluoromethane

    Trichlorofluoromethane, also called freon-11, CFC-11, or R-11, is a chlorofluorocarbon (CFC). It is a colorless, faintly ethereal, and sweetish-smelling liquid that boils around room temperature. [ 5] CFC-11 is a Class 1 ozone -depleting substance which damages Earth's protective stratospheric ozone layer. [ 6]

  8. Subsidy Scorecards: University of Iowa

    projects.huffingtonpost.com/projects/ncaa/...

    SOURCE: Integrated Postsecondary Education Data System, University of Iowa (2014, 2013, 2012, 2011, 2010).Read our methodology here.. HuffPost and The Chronicle examined 201 public D-I schools from 2010-2014.

  9. List of refrigerants - Wikipedia

    en.wikipedia.org/wiki/List_of_refrigerants

    Refrigerant concentration limit / immediately dangerous to life or health in parts per million (volume per volume) and grams per cubic meter Molecular mass in atomic mass units Normal boiling points for pure substances, bubble and dew points for zeotropic blends, or normal boiling point and azeotropic temperature for the azeotropic blends, at ...

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