In this communication, dissociation pressures for clathrate hydrates of the carbon disulfide + nitrogen or carbon dioxide + water system are reported in the (275.7-281.7) and (274.1-281.2) K temperature ranges, respectively. An isochoric pressure search method was used to perform the measurements. The aforementioned hydrate dissociation data are compared with selected experimental data from the literature for the dissociation conditions of nitrogen and carbon dioxide simple hydrates. It is shown while carbon disulfide has thermodynamic promotion effect on the nitrogen clathrate hydrates it has, however, negligible effect on carbon dioxide hydrates. (c) 2013 Elsevier Ltd. All rights reserved.