Trichlorofluoromethane

Trichlorofluoromethane

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
CAS Number	75-69-4 Y
3D model (JSmol)	Interactive image Interactive image
ChEBI	CHEBI:48236 Y
ChEMBL	ChEMBL348290 Y
ChemSpider	6149 Y
ECHA InfoCard	100.000.812
EC Number	200-892-3
PubChem CID	6389
RTECS number	TB6125000
UNII	990TYB331R Y
CompTox Dashboard (EPA)	DTXSID5021384
InChI InChI=1S/CCl3F/c2-1(3,4)5 Y Key: CYRMSUTZVYGINF-UHFFFAOYSA-N Y InChI=1/CCl3F/c2-1(3,4)5
SMILES C(F)(Cl)(Cl)Cl ClC(Cl)(Cl)F
Properties
Chemical formula	CCl3F
Molar mass	137.36 g·mol−1
Appearance	Colorless liquid/gas
Odor	nearly odorless
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)
Solubility in water	1.1 g/L (at 20 °C)
log P	2.53
Vapor pressure	89 kPa at 20 °C 131 kPa at 30 °C
Hazards
Flash point	Non-flammable
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):
PEL (Permissible)	TWA 1000 ppm (5600 mg/m3)
REL (Recommended)	C 1000 ppm (5600 mg/m3)
IDLH (Immediate danger)	2000 ppm
Safety data sheet (SDS)	ICSC 0047
Supplementary data page
Trichlorofluoromethane (data page)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

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

Uses

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, and U.S. production was ended on 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.

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.

Moratorium

The substance is included in the production moratorium agreed in the Montreal Protocol of 1987 but in 2018 it emerged that in People's Republic of China it remains in widespread use as a blowing agent for polyurethane foam insulation in the construction industry and the hoped-for reduction in atmospheric concentration has not materialised.

Gallery

• 
  Hemispheric and Global mean concentrations of CFC-11 (NOAA/ESRL)
• 
  Time-series of atmospheric concentrations of CFC-11 (Walker et al., 2000)
• 
  "Present day" (1990s) sea surface CFC-11 concentration
• 
  "Present day" (1990s) CFC-11 oceanic vertical inventory

External links

• CFC-11 NOAA/ESRL Global measurements
• Public health goal for trichlorofluoromethane in drinking water
• Names at webbook.nist.gov
• Data sheet at speclab.com
• International Chemical Safety Card 0047
• NIOSH Pocket Guide to Chemical Hazards. "#0290". National Institute for Occupational Safety and Health (NIOSH).
• Phase change data at webbook.nist.gov
• Thermochemistry data at chemnet.ru
• ChemSub Online: Trichlorofluoromethane - CFC-11