Difluorochloromethane

• Formula: CHClF₂
• Molecular weight: 86.468
• IUPAC Standard InChI: InChI=1S/CHClF2/c2-1(3)4/h1H Copy

  
• IUPAC Standard InChIKey: VOPWNXZWBYDODV-UHFFFAOYSA-N Copy
• CAS Registry Number: 75-45-6
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
  The 3d structure may be viewed using Java or Javascript.
• Other names: Methane, chlorodifluoro-; Algeon 22; Algofrene Type 6; Arcton 4; Chlorodifluoromethane; Difluoromonochloromethane; Electro-CF 22; F 22; Freon 22; Frigen 22; FC 22; Genetron 22; Isotron 22; Monochlorodifluoromethane; R 22; Ucon 22; CHF2Cl; Algofrene 22; Arcton 22; CFC 22; Daiflon 22; Dymel 22; Eskimon 22; Flugene 22; Fluorocarbon-22; Forane 22; Frigen; Haltron 22; Isceon 22; Khaladon 22; Monochlorodifluormethane; Propellant 22; Refrigerant 22; UN 1018; CHClF2; Algofrene 6; Khladon 22; Flon 22; F 22 (halocarbon); FKW 22; HCFC 22; HFA-22; Refrigerant R 22; Methane, difluoro chloro
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• Information on this page:
  • Condensed phase thermochemistry data
  • Phase change data
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Reaction thermochemistry data
  • Henry's Law data
  • Gas phase ion energetics data
  • Ion clustering data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • Gas Chromatography
  • Fluid Properties
• Data at other public NIST sites:
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  • Electron-Impact Ionization Cross Sections (on physics web site)
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Condensed phase thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Eugene S. Domalski and Elizabeth D. Hearing

Constant pressure heat capacity of liquid

Phase change data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
DH - Eugene S. Domalski and Elizabeth D. Hearing
AC - William E. Acree, Jr., James S. Chickos
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis

Enthalpy of vaporization

Entropy of vaporization

Antoine Equation Parameters

log₁₀(P) = A − (B / (T + C))
    P = vapor pressure (atm)
    T = temperature (K)

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Enthalpy of fusion

Entropy of fusion

Enthalpy of phase transition

Entropy of phase transition

References

Go To: Top, Condensed phase thermochemistry data, Phase change data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Neilson and White, 1957
Neilson, E.F.; White, D., The heat capacity, heat of fusion, heat of transition and heat of vaporization of chlorodifluoromethane between 16°K and the boiling point, J. Am. Chem. Soc., 1957, 79, 5618-5621. [all data]

Benning, McHarness, et al., 1940
Benning, A.F.; McHarness, R.C.; Markwood, W.H., Jr.; Smith, W.J., Thermodynamic properties of fluorochloromethanes and -ethanes. Heat capacity of the liquid and vapor of three fluorochloromethanes and trifluorotrichloroethane, Ind. and Eng. Chem., 1940, 32, 976-980. [all data]

Seliverstov, 1970
Seliverstov, V.M., Solubility of difluoromonochloromethane in certain phthalates, dioctyl sebacate, triacetin, and dimethylformamide, Zh. Prikl. Khim. (Leningrad), 1970, 43, 1605-7. [all data]

Wang, Adcock, et al., 1991
Wang, B.H.; Adcock, J.L.; Mathur, S.B.; Van Hook, W.A., Vapor pressures, liquid molar volumes, vapor non-idealities, and critical properties of some fluorinated ethers: CF3OCF2OCF3, CF3OCF2CF2H, c-CF2CF2 CF2O, CF3OCF2H, and CF3OCH3; and of CCl3F and CF2CI, J. Chem. Thermodyn., 1991, 23, 699-710. [all data]

Blanke and Weiss, 1991
Blanke, W.; Weiss, R., Thermodynamic properties of refrigerants. Part I: the triple points of the refrigerants R11, R12, R22, R142b, and 152a, PTB-Mitt., 1991, 101, 337-9. [all data]

Neilson and White, 1957, 2
Neilson, E.F.; White, D., Heat Capacity, Heat of Fusion, Heat of Transition, and Heat of Vapor- ization of Chlorodifluoromethane Between 16 K and the Boiling Point, J. Am. Chem. Soc., 1957, 79, 5618. [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Kudchadker, Kudchadker, et al., 1979
Kudchadker, A.P.; Kudchadker, S.A.; Shukla, R.P.; Patnaik, P.R., Vapor pressures and boiling points of selected halomethanes, J. Phys. Chem. Ref. Data, 1979, 8, 2, 499, https://doi.org/10.1063/1.555600 . [all data]

Kletskii, 1964
Kletskii, A.V., Inzh. Fiz. Zh. Akad. Nauk Beldrussk. SSR, 1964, 7, 40. [all data]

Kletskii, 1964, 2
Kletskii, A.V., Dependence of Vapor Pressure Freon - 22, Inzh. Fiz. Zh., 1964, 7, 40-43. [all data]

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D., Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III, J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985 . [all data]

Notes

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• Symbols used in this document:
  

  Cp,liquid	Constant pressure heat capacity of liquid
  Pc	Critical pressure
  S°liquid	Entropy of liquid at standard conditions
  Tboil	Boiling point
  Tc	Critical temperature
  Tfus	Fusion (melting) point
  Ttriple	Triple point temperature
  Vc	Critical volume
  ΔHtrs	Enthalpy of phase transition
  ΔStrs	Entropy of phase transition
  ΔfusH	Enthalpy of fusion
  ΔfusS	Entropy of fusion
  ΔvapH	Enthalpy of vaporization
  ΔvapS	Entropy of vaporization
  ρc	Critical density

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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