Chlorotrifluoromethane
Encyclopedia
Chlorotrifluoromethane, R-13, CFC-13, or Freon 13, is a non-flammable, non-corrosive chlorofluorocarbon
(CFC) and also a mixed halomethane
. It is used as a refrigerant
, however, due to concerns about its ozone-depleting potential, its use has been phased out due to the Montreal Protocol
.
Chlorofluorocarbon
A chlorofluorocarbon is an organic compound that contains carbon, chlorine, and fluorine, produced as a volatile derivative of methane and ethane. A common subclass are the hydrochlorofluorocarbons , which contain hydrogen, as well. They are also commonly known by the DuPont trade name Freon...
(CFC) and also a mixed halomethane
Halomethane
Halomethane compounds are derivatives of methane with one or more of the hydrogen atoms replaced with halogen atoms . Halomethanes are both naturally occurring, especially in marine environments, and man-made, most notably as refrigerants, solvents, propellants, and fumigants...
. It is used as a refrigerant
Refrigerant
A refrigerant is a substance used in a heat cycle usually including, for enhanced efficiency, a reversible phase change from a liquid to a gas. Traditionally, fluorocarbons, especially chlorofluorocarbons, were used as refrigerants, but they are being phased out because of their ozone depletion...
, however, due to concerns about its ozone-depleting potential, its use has been phased out due to the Montreal Protocol
Montreal Protocol
The Montreal Protocol on Substances That Deplete the Ozone Layer is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances believed to be responsible for ozone depletion...
.
Physical properties
| Property | Value |
|---|---|
| Density Density The mass density or density of a material is defined as its mass per unit volume. The symbol most often used for density is ρ . In some cases , density is also defined as its weight per unit volume; although, this quantity is more properly called specific weight... (ρ) at -127.8 °C (liquid) |
1.603 g.cm-3 |
| Density Density The mass density or density of a material is defined as its mass per unit volume. The symbol most often used for density is ρ . In some cases , density is also defined as its weight per unit volume; although, this quantity is more properly called specific weight... (ρ) at boiling point (gas) |
6.94 kg.m-3 |
| Density Density The mass density or density of a material is defined as its mass per unit volume. The symbol most often used for density is ρ . In some cases , density is also defined as its weight per unit volume; although, this quantity is more properly called specific weight... (ρ) at 15 °C (gas) |
4.41 g.cm-3 |
| Triple point Triple point In thermodynamics, the triple point of a substance is the temperature and pressure at which the three phases of that substance coexist in thermodynamic equilibrium... temperature (Tt) |
-181 °C (92 K) |
| Critical temperature (Tc) | 28.8 °C (302 K) |
| Critical pressure (pc) | 3.86 MPa (38.6 bar) |
| Critical density (ρc) | 5.5 mol.l-1 |
| Latent heat of vaporization at boiling point | 149.85 kJ.kg-1 |
| Specific heat capacity at constant pressure (Cp) at -34.4 °C | 0.06 kJ.mol-1.K-1 |
| Specific heat capacity at constant volume (CV) at -34.4 °C | 0.051 kJ.mol-1.K-1 |
| Heat capacity ratio Heat capacity ratio The heat capacity ratio or adiabatic index or ratio of specific heats, is the ratio of the heat capacity at constant pressure to heat capacity at constant volume . It is sometimes also known as the isentropic expansion factor and is denoted by \gamma or \kappa . The latter symbol kappa is... (к) at -34.4 °C |
1.168016 |
| Compressibility Factor (Z) at 15 °C | 0.9896 |
| Acentric factor Acentric factor The acentric factor \omega is a conceptual number introduced by Pitzer in 1955, proven to be very useful in the description of matter. It has become a standard for the phase characterization of single & pure components... (ω) |
0.17166 |
| Viscosity Viscosity Viscosity is a measure of the resistance of a fluid which is being deformed by either shear or tensile stress. In everyday terms , viscosity is "thickness" or "internal friction". Thus, water is "thin", having a lower viscosity, while honey is "thick", having a higher viscosity... (η) at 0 °C (gas) |
13.3 mPa.s (0.0133 cP) |
| Viscosity Viscosity Viscosity is a measure of the resistance of a fluid which is being deformed by either shear or tensile stress. In everyday terms , viscosity is "thickness" or "internal friction". Thus, water is "thin", having a lower viscosity, while honey is "thick", having a higher viscosity... (η) at 25 °C (gas) |
14.1 mPa.s (0.01440 cP) |
| Ozone depletion potential Ozone depletion potential The ozone depletion potential of a chemical compound is the relative amount of degradation to the ozone layer it can cause, with trichlorofluoromethane being fixed at an ODP of 1.0. Chlorodifluoromethane , for example, has an ODP of 0.055... (ODP) |
1 (CCl3F Trichlorofluoromethane Trichlorofluoromethane, also called freon-11, CFC-11, or R-11, is a chlorofluorocarbon. It is a colorless, nearly odorless liquid that boils at about room temperature.- Uses :It was the first widely used refrigerant... = 1) |
| Global warming potential Global warming potential Global-warming potential is a relative measure of how much heat a greenhouse gas traps in the atmosphere. It compares the amount of heat trapped by a certain mass of the gas in question to the amount of heat trapped by a similar mass of carbon dioxide. A GWP is calculated over a specific time... (GWP) |
14 000 (CO2 Carbon dioxide Carbon dioxide is a naturally occurring chemical compound composed of two oxygen atoms covalently bonded to a single carbon atom... = 1) |