| 词条 | 1,2-Dichlorotetrafluoroethane |
| 释义 |
| Verifiedfields = changed | Watchedfields = changed | verifiedrevid =6-34842465 | ImageFileL1 = 1,2-dichlorotetrafluoroethane.svg | ImageSizeL1 = | ImageFileR1 = 1,2-dichloro-1,1,2,2-tetrafluoroethane-3D-vdW.png | ImageSizeR1 = | IUPACName = 1,2-Dichlorotetrafluoroethane | OtherNames = R-114, CFC-114, halon 242, cryofluorane, Freon 114, Genetron 114, Refrigerant 114 |Section1={{Chembox Identifiers | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID = 6189 | ChEMBL_Ref = {{ebicite|changed|EBI}} | ChEMBL = 325436 | UNII_Ref = {{fdacite|changed|FDA}} | UNII = 6B5VVT93AR | CASNo = 76-14-2 | CASNo_Ref = {{cascite|correct|CAS}} | EINECS = 200-937-7 | PubChem = 6429 | RTECS = KI1101000 | UNNumber = 1958 | StdInChI=1S/C2Cl2F4/c3-1(5,6)2(4,7)8 | StdInChIKey = DDMOUSALMHHKOS-UHFFFAOYSA-N | SMILES = ClC(F)(F)C(F)(F)Cl |Section2={{Chembox Properties | Formula = C2Cl2F4 | MolarMass = 170.92 g/mol | Appearance = colorless gas[1] | Odor = faint, ether-like (high concentrations)[1] | Density = 1.455 g/cm3 | MeltingPtC = -94 | MeltingPt_notes = | BoilingPtC = 3.5 | BoilingPt_notes = | Solubility = 0.01%[1] | VaporPressure = 1.9 atm (21°C)[1] |Section7={{Chembox Hazards | MainHazards = Ozone depletor | FlashPt = nonflammable | FlashPt_notes = [1] | AutoignitionPt = | PEL = TWA 1000 ppm (7000 mg/m3)[1] | IDLH = 15000 ppm[1] | REL = TWA 1000 ppm (7000 mg/m3)[1] | LC50 = 720,000 ppm (rat, 30 min) 700,000 ppm (mouse, 30 min) 750,000 ppm (rabbit, 30 min)[2] | GHSPictograms = {{GHS04}}{{GHS07}} | GHSSignalWord = Warning | HPhrases = {{H-phrases|280|420}} | PPhrases = {{P-phrases|410+403|502}} }}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 US 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. References1. ^1 2 3 4 5 6 7 {{PGCH|0201}} 2. ^{{IDLH|76142|Dichlorotetrafluoroethane}} 3. ^{{citation|url=http://www.epa.gov/ozone/science/ods/classone.html|title=Class I Ozone-depleting Substances|publisher=United States Environmental Protection Agency|accessdate=May 11, 2012}} External links
5 : Chlorofluorocarbons|Refrigerants|Greenhouse gases|Ozone depletion|GABAA receptor positive allosteric modulators |
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