Other names include perfluoroethane, 1,1,2,2,2-Hexafluoroethane, and freon 116.
CAS no: 76-16-4
Properties
Generic Properties
| Property | Value | Unit |
|---|---|---|
| Chemical Formula | C2F6 | - |
| Molecular Weight | 138.013 | - |
| Heat of Combustion | -4028.6 | kJ/kg |
| Boiling Point | 194.95 | K |
| Freezing Point | 172.45 | K |
Critical Properties
| Property | Value | Unit |
|---|---|---|
| Critical Temperature | 292.8 | K |
| Critical Pressure | 29.79 | bar |
| Critical Volume | 224 | cm3/mol |
| Critical Density | 0.6161 | g/cm3 |
| Critical Z | 0.274 | - |
| Accentric Factor | 0.245 | - |
Temperature Dependent Properties
Specific Heat
The specific heat at constant pressure can be calculated with the formula:
| Constant | Gas | Liquid | Solid |
|---|---|---|---|
| A | 13.604 | -152.019 | 144 |
| B | 0.43503 | 3.8878 | -1.1141 |
| C | -0.00048166 | -0.019409 | 0.0055049 |
| D | 2.484E-07 | 0.000035499 | - |
| E | -4.8897E-11 | - | - |
| T min(K) | 100 | 173 | 111 |
| T max(K) | 1500 | 264 | 164 |
Heat of Formation
The heat of formation can be calculated with the formula:
| Constant | Value |
|---|---|
| A | -1343.5 |
| B | -0.0011411 |
| C | 9.2024E-06 |
| T min(K) | 298.15 |
| T max(K) | 1000 |
Viscosity
The viscosity can be calculated with the formula:
For liquid
For Gas
| Constant | Gas | Liquid |
|---|---|---|
| A | -4.9111 | -5.5327 |
| B | 0.5647 | 391.68 |
| C | -0.00014462 | 0.025 |
| D | - | -0.000051184 |
| T min(K) | 250 | 219.6 |
| T max(K) | 1000 | 278.16 |
Saturation Pressure
Saturation pressure can be calculated with the formula:
| Constant | Value |
|---|---|
| A | 6.99088 |
| B | 723.544 |
| C | 254.242 |
| T min(C) | -100.7 |
| T max(C) | 19.65 |
Heat of Vaporization
The heat of vaporization can be calculated with the formula:
| Constant | Value |
|---|---|
| A | 24.933 |
| n | 0.398 |
| T min(K) | 173.1 |
| T max(K) | 292.8 |
Thermal Conductivity
The thermal conductivity can be calculated with the formula:
| Constant | Gas | Liquid |
|---|---|---|
| A | -0.013967 | 0.1011 |
| B | 0.00010719 | 0.00014592 |
| C | -2.1686E-08 | -0.000001283 |
| T min(K) | 250 | 172 |
| T max(K) | 1000 | 278 |
Liquid Density
The Liquid Density can be calculated with the Equation:
| Constant | Value |
|---|---|
| A | 0.6163 |
| B | 0.2669 |
| n | 0.2979 |
| T min(K) | 172.45 |
| T max(K) | 292.8 |
Diffusion Coefficient at Infinite Dilution in Water
The Diffusion Coefficient at Infinite Dilution in Water can be calculation:
| Constant | Value |
|---|---|
| A | -1.4422 |
| B | -1052.149 |
| T min(K) | 274 |
| T max(K) | 394 |
Diffusion Coefficient in Air
The Diffusion Coefficient in Air can be calculated with the Equation:
| Constant | Value |
|---|---|
| A | -0.04355 |
| B | 0.00031347 |
| C | 5.9155E-07 |
| T min(K) | 200 |
| T max(K) | 1000 |