A History Of The Chlorofluorocarbons Commonly Known As Freons

The beginning of the CFC(chlorofluorocarbons) era started in , when CFC were invented by a Du Pont chemist. CFC were best known as "freons" and. Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) are fully or partly They are also commonly known by the DuPont brand name Freon. .. the time history of CFC concentrations in the atmosphere is relatively well known, .


As previously discussed, CFCs were phased out via the Montreal Protocol due to their part in ozone depletion. Halocarbons and other Atmospheric Trace Gases For example, the CFC number of 11 indicates the number of atoms of carbon, hydrogen, fluorine, and.


Some of these compounds, especially trichlorofluoromethane (CFC) and dichlorodifluoromethane (CFC), found use as aerosol-spray propellants. Chlorofluorocarbons (CFCs) are a group of odorless manufactured chemicals. Because they damage the earth’s ozone layer, CFCs have been banned since Before CFCs were banned, they were used in aerosols, refrigerators, air conditioners, foam food packaging, and fire.


Contact with and inhalation of chlorofluorocarbons can cause damage to the neural and immune system. CFCs can also damage the eyes, and. Chlorofluorocarbons are man-made chemicals that contain the elements chlorine , fluorine and carbon. They normally exist as liquids or gases, and when in the.


To find the number, given the chemical formula: consider the number as consisting of 3 digits: a, b, and c. For 2-digit numbers (e.g., CFC) the. Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) are fully or partly . Another equation that can be applied to get the correct molecular formula of the CFC/R/Freon class compounds is this to take the numbering and add


Chlorofluorocarbons and Ozone Depletion. A National Historic Chemical Landmark. Dedicated at the University of California, Irvine on April 18, Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are.

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