Showing content from https://en.wikipedia.org/wiki/1,2-Dichlorotetrafluoroethane below:
1,2-Dichlorotetrafluoroethane - Wikipedia
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A type of chlorofluorocarbon
1,2-Dichlorotetrafluoroethane Names Preferred IUPAC name
1,2-Dichloro-1,1,2,2-tetrafluoroethane
Other names
R-114, CFC-114, halon 242, cryofluorane, Freon 114, Genetron 114, Refrigerant 114
Identifiers CAS Number
3D model (
JSmol
)
ChEMBL
ChemSpider
ECHA InfoCard 100.000.853 EC Number
PubChem CID
RTECS number
UNII
UN number 1958 CompTox Dashboard (EPA)
InChI
-
InChI=1S/C2Cl2F4/c3-1(5,6)2(4,7)8
Key: DDMOUSALMHHKOS-UHFFFAOYSA-N
SMILES
Properties Chemical formula C2Cl2F4 Molar mass 170.92 g/mol Appearance colorless gas[1] Odor faint, ether-like (high concentrations)[1] Density 1.455 g/cm3 Melting point −94 °C (−137 °F; 179 K) Boiling point 3.5 °C (38.3 °F; 276.6 K) Solubility in water 0.01%[1] Vapor pressure 1.9 atm (21°C)[1] Hazards Occupational safety and health (OHS/OSH):
Main hazards
Ozone depletor GHS labelling: Pictograms Signal word Warning Hazard statements H420 Precautionary statements P410+P403, P502 Flash point nonflammable[1] Lethal dose or concentration (LD, LC):
LC
50
(
median concentration
)
720,000 ppm (rat, 30 min)
700,000 ppm (mouse, 30 min)
750,000 ppm (rabbit, 30 min)[2] NIOSH (US health exposure limits): PEL
(Permissible)
TWA 1000 ppm (7000 mg/m3)[1] REL
(Recommended)
TWA 1000 ppm (7000 mg/m3)[1] IDLH
(Immediate danger)
15000 ppm[1]
Except where otherwise noted, data are given for materials in their
standard state
(at 25 °C [77 °F], 100 kPa).
N verify
(
what is YN
?)
Infobox references
Chemical compound
1,2-Dichlorotetrafluoroethane, or R-114, also known as cryofluorane (INN), is a chlorofluorocarbon (CFC) with the molecular formula ClF2CCF2Cl. Its primary use has been as a refrigerant. It is a non-flammable gas with a sweetish, chloroform-like odor with the critical point occurring at 145.6 °C and 3.26 MPa. When pressurized or cooled, it is a colorless liquid. It is listed on the Intergovernmental Panel on Climate Change's list of ozone depleting chemicals, and is classified as a Montreal Protocol Class I, group 1 ozone depleting substance.[3]
When used as a refrigerant, R-114 is classified as a medium pressure refrigerant.
The U.S. Navy uses R-114 in its centrifugal chillers in preference to R-11 to avoid air and moisture leakage into the system. While the evaporator of an R-11 charged chiller runs at a vacuum during operation, R-114 yields approximately 0 psig operating pressure in the evaporator.
Manufactured and sold R-114 was usually mixed with the non symmetrical isomer 1,1-dichlorotetrafluoroethane (CFC-114a), as separation of the two isomers is difficult.[4]
Mixing ratio of CFC-114 in air (black) between 1960 and 2014. Also levels of CFC-114a are in red.
Aside from its immense environmental impacts, R114, like most chlorofluoroalkanes, forms phosgene gas when exposed to a naked flame.[5]
- ^ a b c d e f g h NIOSH Pocket Guide to Chemical Hazards. "#0201". National Institute for Occupational Safety and Health (NIOSH).
- ^ "Dichlorotetrafluoroethane". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
- ^ United States Environmental Protection Agency (17 July 2015). "Ozone-Depleting Substances". Retrieved 16 May 2021.
- ^ Laube, Johannes C.; Mohd Hanif, Norfazrin; Martinerie, Patricia; Gallacher, Eileen; Fraser, Paul J.; Langenfelds, Ray; Brenninkmeijer, Carl A. M.; Schwander, Jakob; Witrant, Emmanuel; Wang, Jia-Lin; Ou-Yang, Chang-Feng; Gooch, Lauren J.; Reeves, Claire E.; Sturges, William T.; Oram, David E. (9 December 2016). "Tropospheric observations of CFC-114 and CFC-114a with a focus on long-term trends and emissions". Atmospheric Chemistry and Physics. 16 (23): 15347–15358. Bibcode:2016ACP....1615347L. doi:10.5194/acp-16-15347-2016.
- ^ "False Alarms: The Legacy of Phosgene Gas". HVAC School. 4 January 2021. Retrieved 9 May 2022.
GABAA receptor positive modulators Alcohols
Barbiturates
Benzodiazepines
Carbamates
Flavonoids
Imidazoles
Kava constituents
Monoureides
Neuroactive steroids
Nonbenzodiazepines
Phenols
Piperidinediones
Pyrazolopyridines
Quinazolinones
Volatiles/gases
Others/unsorted
- 3-Hydroxybutanal
- α-EMTBL
- AA-29504
- Alogabat
- Avermectins (e.g., ivermectin)
- Bromide compounds (e.g., lithium bromide, potassium bromide, sodium bromide)
- Carbamazepine
- Chloralose
- Chlormezanone
- Clomethiazole
- Darigabat
- DEABL
- Deuterated etifoxine
- Dihydroergolines (e.g., dihydroergocryptine, dihydroergosine, dihydroergotamine, ergoloid (dihydroergotoxine))
- DS2
- Efavirenz
- Etazepine
- Etifoxine
- Fenamates (e.g., flufenamic acid, mefenamic acid, niflumic acid, tolfenamic acid)
- Fluoxetine
- Flupirtine
- Hopantenic acid
- KRM-II-81
- Lanthanum
- Lavender oil
- Lignans (e.g., 4-O-methylhonokiol, honokiol, magnolol, obovatol)
- Loreclezole
- Menthyl isovalerate (validolum)
- Monastrol
- Nicotinic acid
- Nicotinamide
- Org 25,435
- Phenytoin
- Propanidid
- Retigabine (ezogabine)
- Safranal
- Seproxetine
- Stiripentol
- Sulfonylalkanes (e.g., sulfonmethane (sulfonal), tetronal, trional)
- Terpenoids (e.g., borneol)
- Topiramate
- Valerian constituents (e.g., isovaleric acid, isovaleramide, valerenic acid, valerenol)
See also: Receptor/signaling modulators • GABA receptor modulators • GABA metabolism/transport modulators
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