Trichlorofluoromethane

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Trichlorofluoromethane
Trichlorofluoromethane-2D.svg
Trichlorofluoromethane-3D-vdW.png
Names
Preferred IUPAC name
Trichloro(fluoro)methane
Other names
Trichlorofluoromethane
Fluorotrichloromethane
Fluorochloroform
Freon 11
CFC 11
R 11
Arcton 9
Freon 11A
Freon 11B
Freon HE
Freon MF
Identifiers
75-69-4 YesY
ChEBI CHEBI:48236 YesY
ChEMBL ChEMBL348290 YesY
ChemSpider 6149 YesY
EC Number 200-892-3
Jmol 3D model Interactive image
Interactive image
PubChem 6389
RTECS number TB6125000
UNII 990TYB331R YesY
Properties
CCl3F
Molar mass 137.36 g·mol−1
Appearance Colorless liquid/gas
Odor nearly odorless[1]
Density 1.494 g/cm3
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)
log P 2.53
Vapor pressure 89 kPa at 20 °C
131 kPa at 30 °C
Hazards
Safety data sheet See: data page
ICSC 0047
Flash point Non-flammable
Lethal dose or concentration (LD, LC):
26,200 ppm (rat, 4 hr)
100,000 ppm (rat, 20 min)
100,000 ppm (rat, 2 hr)[2]
US health exposure limits (NIOSH):
PEL (Permissible)
TWA 1000 ppm (5600 mg/m3)[1]
REL (Recommended)
C 1000 ppm (5600 mg/m3)[1]
IDLH (Immediate danger)
2000 ppm[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Trichlorofluoromethane, also called freon-11, CFC-11, or R-11, is a chlorofluorocarbon. It is a colorless, faint ethereal and sweetish odor liquid that boils at about room temperature.

Uses[edit]

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.

R-11 is assigned an ozone depletion potential of 1.0. U.S. production was ended in January 1, 1996.

Trichlorofluoromethane is used as a reference compound for fluorine-19 NMR studies.

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.[citation needed]

Gallery[edit]

References[edit]

External links[edit]