It is a colorless gas and is used as a refrigerant and aerosol spray propellant. Now its manufacture is banned in developed countries. Its only allowed usage is as a fire retardant in submarines and aircraft. It is also known as Freon-12.

**CAS no: **75-71-8

## Properties

#### Generic Properties

Property | Value | Unit |
---|---|---|

Chemical Formula | CCl2F2 | - |

Molecular Weight | 120.913 | - |

Heat of Combustion | -804.7 | kJ/kg |

Boiling Point | 243.36 | K |

Freezing Point | 115.15 | K |

#### Critical Properties

Property | Value | Unit |
---|---|---|

Critical Temperature | 384.95 | K |

Critical Pressure | 41.25 | bar |

Critical Volume | 217 | cm3/mol |

Critical Density | 0.5572 | g/cm3 |

Critical Z | 0.28 | - |

Accentric Factor | 0.18 | - |

### Temperature Dependent Properties

#### Specific Heat

The specific heat at constant pressure can be calculated with the formula:

Constant | Gas | Liquid |
---|---|---|

A | 14.877 | 53.463 |

B | 0.28292 | 0.46913 |

C | -0.00036295 | -0.002077 |

D | 2.159E-07 | 4.2398E-06 |

E | -4.8619E-11 | - |

T min(K) | 100 | 116 |

T max(K) | 1500 | 346 |

#### Heat of Formation

The heat of formation can be calculated with the formula:

Constant | Value |
---|---|

A | -491.66 |

B | 0.0019226 |

C | 3.2136E-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 | 13.986 | -14.127 |

B | 0.3763 | 1281.2 |

C | -0.000013267 | 0.0512 |

D | - | -0.000068214 |

T min(K) | 250 | 170 |

T max(K) | 575 | 385 |

#### Heat of Vaporization

The heat of vaporization can be calculated with the formula:

Constant | Value |
---|---|

A | 30.93 |

n | 0.406 |

T min(K) | 115.15 |

T max(K) | 384.95 |

#### Thermal Conductivity

The thermal conductivity can be calculated with the formula:

Constant | Gas | Liquid |
---|---|---|

A | -0.00079 | 0.1852 |

B | 0.000021035 | -0.00028162 |

C | 4.6311E-08 | -3.142E-07 |

T min(K) | 115 | 115 |

T max(K) | 385 | 366 |

#### Liquid Density

The Liquid Density can be calculated with the Equation:

Constant | Value |
---|---|

A | 0.5749 |

B | 0.2788 |

n | 0.2965 |

T min(K) | 115.15 |

T max(K) | 384.95 |

#### Saturation Pressure

The Saturation Pressure can be calculated with the Antoine Equation:

Constant | Value |
---|---|

A | 6.92438 |

B | 865.658 |

C | 243.873 |

T min(C) | -158 |

T max(C) | 111.8 |

#### Diffusion Coefficient at Infinite Dilution in Water

The Diffusion Coefficient at Infinite Dilution in Water can be calculation:

Constant | Value |
---|---|

A | -1.4311 |

B | -1050.681 |

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 | -0.04193 |

B | 0.00031277 |

C | 6.0828E-07 |

T min(K) | 200 |

T max(K) | 1000 |