Difluorochloromethane
- Formula: CHClF2
- Molecular weight: 86.468
- IUPAC Standard InChIKey: VOPWNXZWBYDODV-UHFFFAOYSA-N
- 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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Phase change data
Go To: Top, References, Notes
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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 313.3 | K | N/A | Seliverstov, 1970 | Uncertainty assigned by TRC = 0.6 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 114. | K | N/A | Wang, Adcock, et al., 1991 | Uncertainty assigned by TRC = 2. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 115.760 | K | N/A | Blanke and Weiss, 1991 | Uncertainty assigned by TRC = 0.01 K; on ITS-90; TRC |
Ttriple | 115.73 | K | N/A | Neilson and White, 1957 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.02 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 369.2 ± 0.6 | K | AVG | N/A | Average of 12 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 49.8 ± 0.6 | bar | AVG | N/A | Average of 9 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Vc | 0.147 | l/mol | N/A | Wang, Adcock, et al., 1991 | Uncertainty assigned by TRC = 0.005 l/mol; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 7. ± 2. | mol/l | AVG | N/A | Average of 6 values; Individual data points |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
20.217 | 232.50 | N/A | Neilson and White, 1957, 2 | P = 101.325 kPa.; DH |
20.0 | 290. | A | Stephenson and Malanowski, 1987 | Based on data from 275. to 327. K.; AC |
21.3 | 218. | A | Stephenson and Malanowski, 1987 | Based on data from 170. to 233. K.; AC |
20.4 | 260. | A | Stephenson and Malanowski, 1987 | Based on data from 230. to 275. K.; AC |
20.1 | 339. | A | Stephenson and Malanowski, 1987 | Based on data from 324. to 366. K.; AC |
21.8 | 209. | N/A | Kudchadker, Kudchadker, et al., 1979 | Based on data from 194. to 310. K.; AC |
21.0 | 232. | N/A | Kletskii, 1964 | Based on data from 229. to 236. K.; AC |
20.2 | 232. | C | Neilson and White, 1957, 2 | AC |
Entropy of vaporization
ΔvapS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
86.95 | 232.50 | Neilson and White, 1957, 2 | P; DH |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
229.60 to 236.40 | 4.17693 | 857.673 | -26.667 | Kletskii, 1964, 2 | Coefficents calculated by NIST from author's data. |
232.4 to 358.5 | 4.36567 | 947.577 | -14.964 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
4.12 | 115.7 | Domalski and Hearing, 1996 | AC |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
1.13 | 59. | Domalski and Hearing, 1996 | CAL |
35.65 | 115.7 |
Enthalpy of phase transition
ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
0.067 | 59. | crystaline, II | crystaline, I | Neilson and White, 1957, 2 | DH |
4.1233 | 115.73 | crystaline, I | liquid | Neilson and White, 1957, 2 | DH |
Entropy of phase transition
ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
1.14 | 59. | crystaline, II, Lambda | crystaline, I, type transition | Neilson and White, 1957, 2 | DH |
35.63 | 115.73 | crystaline, I | liquid | Neilson and White, 1957, 2 | DH |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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
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]
Neilson and White, 1957, 2
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]
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
Go To: Top, Phase change data, References
- Symbols used in this document:
Pc Critical pressure 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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