Their name is a registered trademark of DuPont, which introduced them in the 1930's, after observing that their low boiling point, low surface tension, and low viscosity would make them useful refrigerants.
They contain carbon, fluorine, and often other halogens, and it is the fluorine with makes them extremely stable, inert compounds, entirely non-toxic to humans. Their name is a registered trademark of DuPont, which introduced them in the 1930's, after observing that their low boiling point, low surface tension, and low viscosity would make them useful refrigerants. FTP name these organic compounds, controversial since the mid-70's for evidence that they may deplete the ozone layer.
They contain carbon, fluorine, and often other halogens, and it is the fluorine with makes them extremely stable, inert compounds, entirely non-toxic to humans.
{Freons}