The heat capacities and free energies of formation of the methylamines

The purpose of this investigation was the experimental determination of the heat capacities and the free energies of formation of the mono- and di-methylamines as gases. The literature records no values for these quantities and since a knowledge of them is extremely important in their proposed use as refrigerants, their determination was made the object of this investigation. To show adequately the necessary theoretical aspects underlying the determination and use of these thermodynamic quantities, a somewhat historical development of these relations will be attempted