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 |