In this communication, the effect of tetrabutyl ammonium nitrate (TBANO(3)) on CO2, CH4, or N-2 hydrate was studied. Hydrate dissociation conditions for CO2 + TBANO(3) + water, CH4 + TBANO(3) + water and N-2 + TBANO(3) + water were investigated at different concentrations of TBANO(3), viz. (0.05, 0.10, and 0.15) mass fraction, and over a temperature and pressure range of T = (275.1 to 285.1) K and (1.21 to 7.27) MPa, respectively. The results show that the presence of TBANO(3) causes the phase equilibrium curve to be shifted to moderate conditions (lower pressure and higher temperature), especially at higher concentrations of TBANO(3). (C) 2015 Elsevier Ltd. All rights reserved.