The thermogravimetric curves of di-n-propylammonium, di-iso-propylammonium, di-n-butylammonium and di-iso-butylammonium chlorides showed similar profiles, characterized by mass loss in only one stage, corresponding to decomposition
of compounds. The following thermal stability order was obtained: [Bu2nNH2]Cl>[Pr2nNH2]Cl>[Pr2iNH2]Cl>[Bu2iNH2]Cl. The values of activation energy for non-isothermal data obtained by Ozawa and Coats-Redfern integral methods were in
agreement and stability order obtained by thermogravimetry were reproduced in both methods. The decomposition reactions of
[Pr2nNH2]Cl, [Pr2iNH2]Cl and [Bu2iNH2]Cl were better described by A3 model and [Bu2nNH2]Cl by A2 model.