The vapor pressures and molar enthalpies of vaporization, ∆ l g H m , of 2-amino-ethanol, 2-(methylamino)ethanol, 2-(ethylamino)-ethanol, 2-(dimethylamino)-ethanol, and 2-(diethylamino)-ethanol have been determined using the transpiration method. The strength of intermolecular hydrogen bonding in ethanolamines has been derived and discussed in terms of the difference between the enthalpy of vaporization of an alkanolamine and an appropriate homomorph (alkylamine).

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