Difluorochloromethane
- Formula: CHClF2
- Molecular weight: 86.468
- IUPAC Standard InChI: InChI=1S/CHClF2/c2-1(3)4/h1H
- 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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Gas phase thermochemistry 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -481.58 | kJ/mol | Review | Chase, 1998 | Data last reviewed in June, 1970 |
| ΔfH°gas | -483. ± 3. | kJ/mol | Kin | Edwards and Small, 1965 | Corrected for CODATA value of ΔfH; ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 280.96 | J/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1970 |
Gas Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 298. to 1200. | 1200. to 6000. |
|---|---|---|
| A | 25.33466 | 101.0829 |
| B | 150.9600 | 3.643604 |
| C | -116.1432 | -0.699594 |
| D | 33.38334 | 0.046574 |
| E | -0.339043 | -11.47475 |
| F | -496.0216 | -539.3469 |
| G | 269.5693 | 364.7544 |
| H | -481.5784 | -481.5784 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in June, 1970 | Data last reviewed in June, 1970 |
References
Go To: Top, Gas phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Edwards and Small, 1965
Edwards, J.W.; Small, P.A.,
Kinetics of the pyrolysis of chlorodifluoromethane,
Ind. Eng. Chem. Fundam., 1965, 4, 396-400. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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