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Dichlorodifluoromethane information


Dichlorodifluoromethane
Names
Preferred IUPAC name
Dichlorodi(fluoro)methane
Other names
  • Dichlorodifluoromethane
  • Carbon dichloride difluoride
  • Dichloro-difluoro-methane
  • Difluorodichloromethane
  • Freon 12
  • R-12
  • CFC-12
  • P-12
  • Propellant 12
  • Halon 122
  • Arcton 6
  • Arcton 12
  • E940
  • Fluorocarbon 12
  • Genetron 12
  • Refrigerant 12
Identifiers
CAS Number
  • 75-71-8 checkY
3D model (JSmol)
  • Interactive image
ChEMBL
  • ChEMBL2106634 ☒N
ChemSpider
  • 6151 checkY
ECHA InfoCard 100.000.813 Edit this at Wikidata
EC Number
  • 200-893-9
E number E940 (glazing agents, ...)
KEGG
  • D03789 checkY
PubChem CID
  • 6391
RTECS number
  • PA8200000
UNII
  • OFM06SG1KO checkY
UN number 1028
CompTox Dashboard (EPA)
  • DTXSID6020436 Edit this at Wikidata
InChI
  • InChI=1S/CCl2F2/c2-1(3,4)5 checkY
    Key: PXBRQCKWGAHEHS-UHFFFAOYSA-N checkY
  • InChI=1/CCl2F2/c2-1(3,4)5
    Key: PXBRQCKWGAHEHS-UHFFFAOYAX
SMILES
  • ClC(Cl)(F)F
Properties
Chemical formula
 CCl2F2
Molar mass 120.91 g·mol−1
Appearance Colorless gas
Odor ether-like at very high concentrations
Density 1.486 g/cm3 (−29.8 °C (−21.6 °F))
Melting point −157.7 °C (−251.9 °F; 115.5 K)
Boiling point −29.8 °C (−21.6 °F; 243.3 K)
Solubility in water
 0.286 g/L at 20 °C (68 °F)
Solubility in alcohol, ether, benzene, acetic acid Soluble
log P 2.16
Vapor pressure 568 kPa (20 °C (68 °F))
Henry's law
constant (kH)
 0.0025 mol kg−1 bar−1
Magnetic susceptibility (χ)
 −52.2·10−6 cm3/mol
Thermal conductivity 0.0097 W/(m·K) (300 K)[1]
Structure
Molecular shape
 Tetrahedral
Dipole moment
 0.51 D[2]
Hazards
GHS labelling:
Pictograms
 GHS04: Compressed Gas GHS07: Exclamation mark
Signal word
 Warning
Hazard statements
 H280, H336, H420
Precautionary statements
 P261, P271, P304+P340, P319, P403+P233, P405, P410+P403, P501, P502
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 0: Exposure under fire conditions would offer no hazard beyond that of ordinary combustible material. E.g. sodium chlorideFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
0
0
0
Flash point Non-flammable[3]
Lethal dose or concentration (LD, LC):
LC50 (median concentration)
 760,000 ppm (mouse, 30 min)
800,000 ppm (rabbit, 30 min)
800,000 ppm (guinea pig, 30 min)
600,000 ppm (rat, 2 h)[4]
NIOSH (US health exposure limits):
PEL (Permissible)
 TWA 1000 ppm (4950 mg/m3)[3]
REL (Recommended)
 TWA 1000 ppm (4950 mg/m3)[3]
IDLH (Immediate danger)
 15000 ppm[3]
Supplementary data page
Dichlorodifluoromethane (data page)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)
Infobox references

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. In compliance with the Montreal Protocol, its manufacture was banned in developed countries (non-article 5 countries) in 1996, and in developing countries (Article 5 countries) in 2010 out of concerns about its damaging effect on the ozone layer.[5] Its only allowed usage is as a fire retardant in submarines and aircraft. It is soluble in many organic solvents. R-12 cylinders are colored white.

  1. ^ Touloukian, Y. S., Liley, P. E., and Saxena, S. C. Thermophysical properties of matter – the TPRC data series. Volume 3. Thermal conductivity – nonmetallic liquids and gases. Data book. 1970.
  2. ^ Khristenko, Sergei V.; Maslov, Alexander I. and Viatcheslav P. Shevelko; Molecules and Their Spectroscopic Properties, p. 74 ISBN 3642719481.
  3. ^ a b c d NIOSH Pocket Guide to Chemical Hazards. "#0192". National Institute for Occupational Safety and Health (NIOSH).
  4. ^ "Dichlorodifluoromethane". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
  5. ^ "1:Update on Ozone-Depleting Substances (ODSs) and Other Gases of Interest to the Montreal Protocol". Scientific assessment of ozone depletion: 2018 (PDF) (Global Ozone Research and Monitoring Project–Report No. 58 ed.). Geneva, Switzerland: World Meteorological Organization. 2018. p. 1.10. ISBN 978-1-7329317-1-8. Retrieved 22 November 2020.

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Dichlorodifluoromethane

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Dichlorodifluoromethane (R-12) is a colorless gas usually sold under the brand name Freon-12, and a chlorofluorocarbon halomethane (CFC) used as a refrigerant...

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Freon

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DuPont formed Kinetic Chemicals to produce Freon. Their product was dichlorodifluoromethane and is now designated "Freon-12", "R-12", or "CFC-12". The number...

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Halon

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Halon 1211 (bromochlorodifluoromethane, CF2ClBr) Halon 122 (dichlorodifluoromethane) Halon 1301 (bromotrifluoromethane, CBrF3) Halon 14 (tetrafluoromethane)...

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Amyl nitrite

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solvent in industrial and household applications. It replaced dichlorodifluoromethane, an industrial chemical universally banned in 1996 due to damage...

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Cryogenics

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often considered to be that below approximately 120 K (-153 C). "DICHLORODIFLUOROMETHANE at Pubchem". "PROPANE at Pubchem". J. M. Nash, 1991, "Vortex Expansion...

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Chlorofluorocarbon

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derivatives of methane, ethane, and propane. The most common example is dichlorodifluoromethane (R-12). R-12 is also commonly called Freon and was used as a refrigerant...

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Carbon dioxide

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nomenclature R744 or R-744) was used as a refrigerant prior to the use of dichlorodifluoromethane (R12, a chlorofluorocarbon (CFC) compound). CO2 might enjoy a renaissance...

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Carbon tetrachloride

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gives various compounds such as trichlorofluoromethane (R-11), dichlorodifluoromethane (R-12), chlorotrifluoromethane (R-13) and carbon tetrafluoride...

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Cleaning agent

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other nitrites Bleach Borax Carbon dioxide Citric acid Freon (e.g. dichlorodifluoromethane) (use is often discouraged due to damaging effects on the ozone...

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Ozone depletion potential

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(CClF2-F) R-13 1.00 Bromotrifluoromethane (CBrF3) Halon 1301 15.9 Dichlorodifluoromethane (CClF2-Cl) R-12 1.00 Bromochlorodifluoromethane (CClF2-Br) R-12B1...

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Glossary of chemical formulae

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Chemical formula Synonyms CAS number CAgO carbonylsilver CCl2F2 dichlorodifluoromethane freon-12 75-71-8 CCl4 carbon tetrachloride tetrachloromethane 56-23-5...

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Ethylene oxide

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mixture with carbon dioxide (8.5–80% of ethylene oxide), nitrogen or dichlorodifluoromethane (12% ethylene oxide). It is applied for gas-phase sterilization...

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E number

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in the EU. E939 Helium packaging gas Approved in the EU. E940 Dichlorodifluoromethane packaging gas Banned in all countries, in compliance with the Montreal...

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Halomethane

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a refrigerant. The main chemical used under this trademark is dichlorodifluoromethane. The word Freon is a registered trademark belonging to DuPont.)...

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Refrigerant

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developed countries by Montreal Protocol in 1996 R-12 CFC-12 CCl2F2 Dichlorodifluoromethane 10800 10200 Banned Also known as Freon, a widely used chlorofluorocarbon...

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Carbon tetrafluoride

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Commercially it is manufactured by the reaction of hydrogen fluoride with dichlorodifluoromethane or chlorotrifluoromethane; it is also produced during the electrolysis...

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Perfluorinated compound

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tomography (CT) and sonography; fluid used in liquid breathing. Dichlorodifluoromethane, a refrigerant. Tetrafluoroethylene, precursor to polytetrafluoroethylene...

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R12

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United States Navy R12 (cemetery), a Neolithic cemetery in Sudan Dichlorodifluoromethane, a refrigerant Ndombe language R-12 Dvina, a Soviet ballistic missile...

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Trichlorofluoromethane

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producing a mixture of trichlorofluoromethane, tetrafluoromethane and dichlorodifluoromethane in a ratio of 77:18:5. The reaction can also be carried out in...

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Shielding gas

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applications, pure or as blend additives; e.g. sulfur hexafluoride or dichlorodifluoromethane. Sulfur hexafluoride can be added to shield gas for aluminium welding...

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Tape head cleaner

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heads include (but are not limited to) the following solvents: Dichlorodifluoromethane (discontinued in 1995 due to damage to the ozone layer). Alcohol...

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Immediately dangerous to life or health

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906 mg/m3 150 ppm 106467, carcinogenic substance 75-71-8 0048 Dichlorodifluoromethane 7425 mg/m3 15000 ppm 75718 118-52-5 - 1,3-Dichloro-5,5-dimethylhydantoin...

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Care 30

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of isobutane (R-600a) and propane (R-290) developed to replace dichlorodifluoromethane (R-12) and 1,1,1,2-tetrafluoroethane (R-134a). It is primarily...

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Packaging gas

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rarely used because of the damage that they do to the ozone layer: dichlorodifluoromethane (E940) chloropentafluoroethane (E945) nitrous oxide (E942), used...

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