|Preferred IUPAC name
3D model (JSmol)
CompTox Dashboard (EPA)
|Molar mass||137.36 g·mol−1|
|Melting point||−110.48 °C (−166.86 °F; 162.67 K)|
|Boiling point||23.77 °C (74.79 °F; 296.92 K)|
|1.1 g/L (at 20 °C)|
|Vapor pressure||89 kPa at 20 °C|
131 kPa at 30 °C
|Safety data sheet||See: data page|
|Lethal dose or concentration (LD, LC):|
LCLo (lowest published)
|26,200 ppm (rat, 4 hr)|
100,000 ppm (rat, 20 min)
100,000 ppm (rat, 2 hr)
|NIOSH (US health exposure limits):|
|TWA 1000 ppm (5600 mg/m3)|
|C 1000 ppm (5600 mg/m3)|
IDLH (Immediate danger)
|Supplementary data page|
|Refractive index (n),|
Dielectric constant (εr), etc.
|UV, IR, NMR, MS|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
It was the first widely used refrigerant. Because of its high boiling point (compared to most refrigerants), it can be used in systems with a low operating pressure, making the mechanical design of such systems less demanding than that of higher-pressure refrigerants R-12 or R-22.
Trichlorofluoromethane is used as a reference compound for fluorine-19 NMR studies.
R-11 is assigned an ozone depletion potential of 1.0, and U.S. production was ended on January 1, 1996.
Prior to the knowledge of the ozone depletion potential of chlorine in refrigerants and other possible harmful effects on the environment, trichlorofluoromethane was sometimes used as a cleaning/rinsing agent for low-pressure systems.
Trichlorofluoromethane was formerly used in the drinking bird novelty, largely because it has a boiling point of 23.77℃ (74.79℉). The replacement, dichloromethane, boiling point 39.6℃ (103.3℉), requires a higher ambient temperature to work.
The substance was included in the production moratorium agreed in the Montreal Protocol of 1987. However, in 2018, its atmospheric concentration was noted to be declining more slowly than expected, and it subsequently emerged that it remains in widespread use as a blowing agent for polyurethane foam insulation in the construction industry of China.
Decline of CFC-11 has slowed in recent years, pointing to a renewed source