Yahoo Poland Wyszukiwanie w Internecie

Search results

  1. R-12 is also commonly called Freon and was used as a refrigerant. Many CFCs have been widely used as refrigerants , propellants (in aerosol applications), gaseous fire suppression systems, and solvents .

  2. Freony to związki fluoru, chloru i węgla, R-134a jest fluorowanym węglowodorem zawierającym niepodstawione atomy wodoru (nie zawiera chloru). Jego wzór sumaryczny to C H 2 FCF 3. Znaczenie dla środowiska. W latach 1970. opublikowano badania dowodzące, że emisja freonów do atmosfery powoduje niszczenie warstwy ozonowej w atmosferze [4] [5].

  3. Freon, (trademark), any of several simple fluorinated aliphatic organic compounds that are used in commerce and industry. In addition to fluorine and carbon, Freons often contain hydrogen, chlorine, or bromine.

  4. en.wikipedia.org › wiki › FluorocarbonFluorocarbon - Wikipedia

    Fluorocarbons are chemical compounds with carbon-fluorine bonds. Compounds that contain many C-F bonds often have distinctive properties, e.g., enhanced [clarification needed] stability, volatility, and hydrophobicity. Several fluorocarbons and their derivatives are commercial polymers, refrigerants, drugs, and anesthetics. [1]

  5. 18 sie 2020 · This Review chronicles the progress made in the field of small fluorocarbon synthesis since their invention in the early 1930s by Thomas Midgley, Jr., and his coworkers, with special focus on their application as refrigerants, foam expansion agents, aerosol propellants, and precision solvents. Divided into four generations of C 1 –C 4 ...

  6. 17 lis 2023 · Chlorofluorocarbons (CFCs) are non-toxic, non-flammable chemicals composed of carbon, chlorine, and fluorine, with the term CFC originating from these constituent elements. They have been used in items such as aerosol sprays, foam-blowing agents, solvents, and refrigerants.

  7. CFCs are a family of chemicals based upon hydrocarbon skeletons, where most hydrogens have been replaced with chlorine and/or fluorine atoms. They are chemically stable freons that are non-flammable, tasteless and odourless.

  1. Ludzie szukają również