Vapor–liquid equilibria of N,N,N′,N′ tetramethylethylenediamine (TMEDA), tetramethylpropylenediamine (TMPDA) and their aqueous solutions

Zahida Bouzina (1) , Amina Negadi (1) , Fatiha Dergal (1, 2) , Ilham Mokbel (2, 3) , Jacques Jose (2) , Latifa Negadi (4)

1 LATA2M - Laboratoire de Thermodynamique Appliquée et Modélisation Moléculaire
2 LMI - Laboratoire des Multimatériaux et Interfaces
3 UJM - Université Jean Monnet - Saint-Étienne
4 LATA2M - Laboratoire de Thermodynamique Appliquée et Modélisation Moléculaire

The vapor pressures of (N,N,N′,N′ tetramethylethylenediamine (TMEDA) + water), (tetramethylpropylenediamine (TMPDA) + water) binary mixtures, and of pure N,N,N′,N′ tetramethylethylenediamine and tetramethylpropylenediamine components were measured by means of a static device at temperatures between 273 and 363 K. The data were correlated with the Antoine equation. From these data excess Gibbs functions (GE) were calculated for several constant temperatures and fitted to a three order Redlich–Kister equation using the Barker's method. The two binary systems show a positive azeotropic behavior. The TMEDA aqueous solution exhibits positive deviations in GE for all investigated temperatures over the whole composition. The (TMPDA + water) system shows the same behavior except for T = 273.15 and 283.15 K where a sinusoidal shape is observed. Additionally, the NRTL and UNIQUAC models have been used for the correlation or prediction of the total pressure.

Mots clés: Vapor–liquid equilibria; Static apparatus; Diamines; Water; Environment

Domaines: Chimie; Chimie organique

Zahida Bouzina, Amina Negadi, Fatiha Dergal, Ilham Mokbel, Jacques Jose, et al.. Vapor–liquid equilibria of N,N,N′,N′ tetramethylethylenediamine (TMEDA), tetramethylpropylenediamine (TMPDA) and their aqueous solutions. Journal of Molecular Liquids, 2015, 201, pp.83-89. ⟨10.1016/j.molliq.2014.11.012⟩. ⟨hal-02881620⟩