Methylamine is a colorless gas derived from ammonia. It is the simplest primary amine. Methylamine is used as a building block for the synthesis of numerous other commercially available compounds.

**CAS no: **74-89-5

## Properties

#### Generic Properties

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

Chemical Formula | CH5N | - |

Molecular Weight | 31.058 | - |

Heat of Combustion | 30717 | kJ/kg |

Boiling Point | 266.82 | K |

Freezing Point | 179.69 | K |

Flash Point | 215.37 | K |

Auto Ignition | 703.15 | K |

LEL | 4.9 | vol % |

UEL | 20.7 | vol % |

#### Critical Properties

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

Critical Temperature | 430.05 | K |

Critical Pressure | 74.58 | bar |

Critical Volume | 154 | cm3/mol |

Critical Density | 0.2017 | g/cm3 |

Critical Z | 0.321 | - |

Accentric Factor | 0.281 | - |

### Temperature Dependent Properties

#### Specific Heat

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

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

A | 40.039 | 13.565 | -8.069 |

B | -0.015108 | 0.90836 | 0.64888 |

C | 0.00025012 | -0.0034881 | -0.0015032 |

D | -2.334E-07 | 0.000005277 | - |

E | 6.5582E-11 | - | - |

T min(K) | 100 | 181 | 80 |

T max(K) | 1500 | 387 | 175 |

#### Heat of Formation

The heat of formation can be calculated with the formula:

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

A | -7.0039 |

B | -0.060803 |

C | 0.000029611 |

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 | -4.2671 | -9.467 |

B | 0.2865 | 982.86 |

C | -0.000046017 | 0.0289 |

D | - | -0.000035672 |

T min(K) | 250 | 180 |

T max(K) | 1000 | 430 |

#### Saturation Pressure

Saturation pressure can be calculated with the formula:

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

A | 7.36379 |

B | 1025.4 |

C | 235.062 |

T min(C) | -93.46 |

T max(C) | 156.9 |

#### Heat of Vaporization

The heat of vaporization can be calculated with the formula:

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

A | 38.656 |

n | 0.405 |

T min(K) | 179.69 |

T max(K) | 430.05 |

#### Thermal Conductivity

The thermal conductivity can be calculated with the formula:

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

A | -0.0076391 | 0.2501 |

B | 0.000065194 | 0.00011263 |

C | 4.9249E-08 | -9.469E-07 |

T min(K) | 250 | 180 |

T max(K) | 1000 | 409 |

#### Liquid Density

The Liquid Density can be calculated with the Equation:

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

A | 0.2017 |

B | 0.2141 |

n | 0.2275 |

T min(K) | 179.69 |

T max(K) | 430.05 |

#### Diffusion Coefficient at Infinite Dilution in Water

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

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

A | -1.3194 |

B | -1035.921 |

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 | -0.07342 |

B | 0.00048011 |

C | 9.4755E-07 |

T min(K) | 200 |

T max(K) | 1000 |