It is a colorless gas and is commonly used as a propellant and refrigerant. It is also known as difluoromonochloromethane, HCFC-22, R-22, and CHClF.

**CAS no: **75-45-6

## Properties

#### Generic Properties

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

Chemical Formula | CHClF2 | - |

Molecular Weight | 86.468 | - |

Heat of Combustion | 365.5 | kJ/kg |

Boiling Point | 232.32 | K |

Freezing Point | 115.73 | K |

Flash Point | 194.8166667 | K |

Auto Ignition | 905.37 | K |

UEL | 26.9 | vol % |

#### Critical Properties

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

Critical Temperature | 369.3 | K |

Critical Pressure | 49.71 | bar |

Critical Volume | 166 | cm3/mol |

Critical Density | 0.5209 | g/cm3 |

Critical Z | 0.269 | - |

Accentric Factor | 0.219 | - |

### Temperature Dependent Properties

#### Specific Heat

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

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

A | 20.519 | 44.503 | 15.6 |

B | 0.14746 | 0.47737 | 0.576 |

C | -0.00009244 | -0.0022107 | -0.00156 |

D | 1.438E-08 | 4.5786E-06 | - |

E | 3.4356E-12 | - | - |

T min(K) | 100 | 117 | 30 |

T max(K) | 1500 | 332 | 116 |

#### Heat of Formation

The heat of formation can be calculated with the formula:

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

A | -478.31 |

B | -0.018341 |

C | 0.000011005 |

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 | -9.5169 | -10.893 |

B | 0.5038 | 979.72 |

C | -0.00013232 | 0.0387 |

D | - | -0.000052025 |

T min(K) | 232 | 170 |

T max(K) | 500 | 369 |

#### Heat of Vaporization

The heat of vaporization can be calculated with the formula:

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

A | 29.612 |

n | 0.386 |

T min(K) | 115.73 |

T max(K) | 369.3 |

#### Thermal Conductivity

The thermal conductivity can be calculated with the formula:

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

A | -0.00011 | 0.2002 |

B | 0.000016709 | -0.00022277 |

C | 6.3391E-08 | -5.4334E-07 |

T min(K) | 232 | 116 |

T max(K) | 500 | 351 |

#### Liquid Density

The Liquid Density can be calculated with the Equation:

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

A | 0.5186 |

B | 0.2661 |

n | 0.2812 |

T min(K) | 115.73 |

T max(K) | 369.3 |

#### Saturation Pressure

The Saturation Pressure can be calculated with the Antoine Equation:

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

A | 7.07154 |

B | 848.817 |

C | 243.376 |

T min(C) | -157.42 |

T max(C) | 96.15 |

#### Diffusion Coefficient at Infinite Dilution in Water

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

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

A | -1.378 |

B | -1043.67 |

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 | -0.05827 |

B | 0.00036496 |

C | 7.049E-07 |

T min(K) | 200 |

T max(K) | 1000 |