It is a colorless, odorless, flammable gas. It is also known as Freon 31.
CAS no: 593-70-4
Properties
Generic Properties
Property | Value | Unit |
---|---|---|
Chemical Formula | CH2ClF | - |
Molecular Weight | 68.478 | - |
Heat of Combustion | 5397.4 | kJ/kg |
Boiling Point | 264.06 | K |
Freezing Point | 140.16 | K |
Critical Properties
Property | Value | Unit |
---|---|---|
Critical Temperature | 424.91 | K |
Critical Pressure | 51.31 | bar |
Critical Volume | 158.5 | cm3/mol |
Critical Density | 0.432 | g/cm3 |
Critical Z | 0.23 | - |
Accentric Factor | 0.199 | - |
Temperature Dependent Properties
Specific Heat
The specific heat at constant pressure can be calculated with the formula:

Constant | Gas | Liquid |
---|---|---|
A | 12.674 | 86.915 |
B | 0.13973 | -0.036025 |
C | -0.000088709 | 0.00026561 |
D | 2.158E-08 | 0 |
E | 0 | - |
T min(K) | 298 | 141 |
T max(K) | 1000 | 294 |
Heat of Formation
The heat of formation can be calculated with the formula:

Constant | Value |
---|---|
A | -258.34 |
B | -0.028792 |
C | 0.000013824 |
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 | -11.304 | -3.849 |
B | 0.3979 | 475.14 |
C | -0.000087803 | 0.01 |
D | - | -0.000015329 |
T min(K) | 250 | 192.2 |
T max(K) | 1000 | 403.66 |
Heat of Vaporization
The heat of vaporization can be calculated with the formula:

Constant | Value |
---|---|
A | 32.899 |
n | 0.38 |
T min(K) | 140.16 |
T max(K) | 424.91 |
Thermal Conductivity
The thermal conductivity can be calculated with the formula:

Constant | Gas | Liquid |
---|---|---|
A | -0.0075777 | 0.2387 |
B | 0.000054323 | -0.00018611 |
C | 5.5546E-09 | -4.8859E-07 |
T min(K) | 250 | 170.16 |
T max(K) | 1000 | 354.91 |
Liquid Density
The Liquid Density can be calculated with the Equation:

Constant | Value |
---|---|
A | 0.4438 |
B | 0.23 |
n | 0.2857 |
T min(K) | 140.16 |
T max(K) | 424.91 |
Saturation Pressure
The Saturation Pressure can be calculated with the Antoine Equation:

Constant | Value |
---|---|
A | 7.92235 |
B | 1587.64 |
C | 324.003 |
T min(C) | -55 |
T max(C) | 151.76 |
Diffusion Coefficient at Infinite Dilution in Water
The Diffusion Coefficient at Infinite Dilution in Water can be calculation:

Constant | Value |
---|---|
A | -1.3427 |
B | -1039.005 |
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 | -0.06478 |
B | 0.00039457 |
C | 7.7738E-07 |
T min(K) | 200 |
T max(K) | 1000 |