Perfluorocarbons (PFCs) : Perfluorocarbons (CnF2n+2) are obtained by controlled fluorination of vapourized alkanes diluted with nitrogen gas in the presence of a catalyst.
These are odourless, non-toxic, non-corrosive, colourless, non-polar, extremely stable, unreactive gases and non-flammable, solids and liquids. These are stable to ultraviolet radiations and other ionising radiations and therefore, they do not detect the ozone layer like freons.
These are good electrical insulators. These have many important uses such as :
(i) These are used as surface coatings, lubricants and dielectrics.
(ii) These are used as heat transmits media in high voltage electrical equipment.
(iii) These are used for vapour phase soldering, gross leak finding of packed microchips etc. in electronic organization.
(iv) These are also used in medicine and health care such as skin care cosmetics, wound healing, liquid ventilation, carbon monoxide poisoning and many medical diagnosis.
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