- InChI
- InChI=1S/C2H4F2/c3-1-2-4/h1-2H2
- InChI Key
- AHFMSNDOYCFEPH-UHFFFAOYSA-N
- Formula
- C2H4F2
- SMILES
- FCCF
- Molecular Weight1
- 66.05
- CAS
- 624-72-6
- Other Names
-
- CH2FCH2F
- Ethane, 1,2-difluoro-
- Ethylene difluolride
- FC143
- Fluorocarbon fc143
- Freon 152
- REFRIGERANT-152
- Cp,gas : Ideal gas heat capacity (J/mol×K).
- ΔfG° : Standard Gibbs free energy of formation (kJ/mol).
- ΔfH°gas : Enthalpy of formation at standard conditions (kJ/mol).
- ΔfusH° : Enthalpy of fusion at standard conditions (kJ/mol).
- ΔvapH° : Enthalpy of vaporization at standard conditions (kJ/mol).
- log10WS : Log10 of Water solubility in mol/l.
- logPoct/wat : Octanol/Water partition coefficient.
- McVol : McGowan's characteristic volume (ml/mol).
- Pc : Critical Pressure (kPa).
- Pvap : Vapor pressure (kPa).
- Inp : Non-polar retention indices.
- Tboil : Normal Boiling Point Temperature (K).
- Tc : Critical Temperature (K).
- Tfus : Normal melting (fusion) point (K).
- Vc : Critical Volume (m3/kmol).
- 1: Molecular weight from the IUPAC atomic weights tables.
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Physical Properties
| Property | Value | Unit | Source |
|---|---|---|---|
| ΔfG° | -423.66 | kJ/mol | Joback Calculated Property |
| ΔfH°gas | -476.83 | kJ/mol | Joback Calculated Property |
| ΔfusH° | 7.10 | kJ/mol | Joback Calculated Property |
| ΔvapH° | 18.41 | kJ/mol | Joback Calculated Property |
| log10WS | -0.37 | Crippen Calculated Property | |
| logPoct/wat | 0.925 | Crippen Calculated Property | |
| McVol | 42.580 | ml/mol | McGowan Calculated Property |
| Pc | 4444.44 | kPa | Joback Calculated Property |
| Inp | [368.00; 368.00] |
|
|
| Inp | 368.00 | NIST | |
| Inp | 368.00 | NIST | |
| Tboil | 283.65 ± 1.00 | K | NIST |
| Tc | 381.80 | K | Joback Calculated Property |
| Tfus | 113.48 | K | Joback Calculated Property |
| Vc | 0.183 | m3/kmol | Joback Calculated Property |
Temperature Dependent Properties
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Cp,gas | [59.58; 80.41] | J/mol×K | [243.70; 381.80] |
|
| Cp,gas | 59.58 | J/mol×K | 243.70 | Joback Calculated Property |
| Cp,gas | 63.31 | J/mol×K | 266.72 | Joback Calculated Property |
| Cp,gas | 66.93 | J/mol×K | 289.73 | Joback Calculated Property |
| Cp,gas | 70.45 | J/mol×K | 312.75 | Joback Calculated Property |
| Cp,gas | 73.87 | J/mol×K | 335.76 | Joback Calculated Property |
| Cp,gas | 77.19 | J/mol×K | 358.78 | Joback Calculated Property |
| Cp,gas | 80.41 | J/mol×K | 381.80 | Joback Calculated Property |
Correlations
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Pvap | [1.33; 202.63] | kPa | [210.40; 301.44] |
The Yaw...
|
| Equation | ln(Pvp) = A + B/(T + C) | |||
| Coefficient A | 1.50142e+01 | |||
| Coefficient B | -2.58932e+03 | |||
| Coefficient C | -3.45780e+01 | |||
| Temperature range, min. | 210.40 | |||
| Temperature range, max. | 301.44 | |||
| Pvap | 1.33 | kPa | 210.40 | Calculated Property |
| Pvap | 2.97 | kPa | 220.52 | Calculated Property |
| Pvap | 6.09 | kPa | 230.63 | Calculated Property |
| Pvap | 11.65 | kPa | 240.75 | Calculated Property |
| Pvap | 20.96 | kPa | 250.86 | Calculated Property |
| Pvap | 35.78 | kPa | 260.98 | Calculated Property |
| Pvap | 58.35 | kPa | 271.09 | Calculated Property |
| Pvap | 91.42 | kPa | 281.21 | Calculated Property |
| Pvap | 138.26 | kPa | 291.32 | Calculated Property |
| Pvap | 202.63 | kPa | 301.44 | Calculated Property |
| Pvap | [0.89; 4304.69] | kPa | [215.00; 476.00] |
KDB Vap...
|
| Equation | ln(Pvp) = A + B/T + C*ln(T) + D*T^2 | |||
| Coefficient A | 6.09008e+01 | |||
| Coefficient B | -5.04105e+03 | |||
| Coefficient C | -7.05486e+00 | |||
| Coefficient D | 6.85539e-06 | |||
| Temperature range, min. | 215.00 | |||
| Temperature range, max. | 476.00 | |||
| Pvap | 0.89 | kPa | 215.00 | Calculated Property |
| Pvap | 6.47 | kPa | 244.00 | Calculated Property |
| Pvap | 29.15 | kPa | 273.00 | Calculated Property |
| Pvap | 94.40 | kPa | 302.00 | Calculated Property |
| Pvap | 242.01 | kPa | 331.00 | Calculated Property |
| Pvap | 523.59 | kPa | 360.00 | Calculated Property |
| Pvap | 999.19 | kPa | 389.00 | Calculated Property |
| Pvap | 1735.75 | kPa | 418.00 | Calculated Property |
| Pvap | 2808.35 | kPa | 447.00 | Calculated Property |
| Pvap | 4304.69 | kPa | 476.00 | Calculated Property |
Similar Compounds
Find more compounds similar to 1,2-Difluoroethane.
Sources
- KDB Vapor Pressure Data
- Crippen Method
- Crippen Method
- Joback Method
- KDB
- McGowan Method
- NIST Webbook
- The Yaws Handbook of Vapor Pressure
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