Is R12 a CFC?
Common CFC refrigerants are R-11, R-12, R-13, R-113, R-114, and R-115. A blend that contains a CFC and any other product is still considered a CFC refrigerant.
Is CFC-12 flammable?
Dichlorodifluoromethane (CFC-12) is a non-flammable and unreactive gas that makes a good refrigerant.
What is Freon-12 used for?
Dichlorodifluoromethane is a colorless gas usually sold under the brand name Freon-12, used as a refrigerant and aerosol spray propellant.
What do you mean by CFC-11?
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. CFC-11 is a Class 1 ozone-depleting substance which damages Earth’s protective stratospheric ozone layer.
Is CFC-12 a greenhouse gas?
A single molecule of CFC-12 can hold nearly 11,000 times the heat of carbon dioxide, making it an extraordinarily potent greenhouse gas.
What is R12 made of?
The chemical name of refrigerant R12 is dichlorodifluoromethane and its chemical formula is CCl2F2. The molecular weight of R12 is 120.9 and its boiling point is -21.6 degree F. Since R12 has the molecules of chlorine and fluorine, it is called as chlorofluorocarbon (CFC).
Is R12 hazardous?
Overexposure may cause dizziness and loss of concentration. At higher levels, CNS depression and cardiac arrhythmia may result from exposure. Vapors displace air and can cause asphyxiation in confined spaces.
What is the commercial name of CFC-12?
Freon-12
Dichlorodifluoromethane (R-12) is a colorless gas usually sold under the brand name Freon-12, and a chlorofluorocarbon halomethane (CFC) used as a refrigerant and aerosol spray propellant.
What do you mean by CFC-11 and CFC 12?
All compounds have no known natural sources. In the early literature, CFC 11 and CFC 12 were also called chlorofluoromethanes due to their methane-type structure. The trade name of CFCs (DuPond) is Freon (F 11, F 12, F 113). The main use of CFCs is summarized in Table 1.
How is CFC number calculated?
For CFC-11: 90 + 11 = 101, so the number of carbon atoms is 1, the number of hydrogen atoms is zero, the number of fluorine atoms is 1, and the number of chlorine atoms is (2 + 2 – 0 – 1 = 3). So the chemical formula for CFC-11 is CFCl3. That is, it has 1 carbon atom, no hydrogen, 1 fluorine atom, and 3 chlorine atoms.
Where are halocarbons used?
Common uses for halocarbons have been as solvents, pesticides, refrigerants, fire-resistant oils, ingredients of elastomers, adhesives and sealants, electrically insulating coatings, plasticizers, and plastics. Many halocarbons have specialized uses in industry. One halocarbon, sucralose, is a sweetener.
Is R12 still available?
If You Have An Old System, It’s Time For a Replacement! The most common refrigerant fuel for Commercial HVAC systems in Texas, R12, is due for a complete phase out by 2021.