In this paper

the correlation between depression of gas hydrate formation temperature AT and freezing point depression of aqueous inhibitor solution △T has been established according to the principle of thermodynamics: where n is water molecular number in the gas hydrate

T0

T0 are gas hydrate formation temperature and freezing point of water in the absence of inhibitors

respectively

λ

λ are gas hydrate formation heat and ice fusion heat respectively. △T can be calculated from △T with this coreelation. The results obtained are close to experimental values. Pieroens mehtod can only be used for non-electrolyte inhibitors

whereas this method is independent of the types of inhibitors. Since △T is obtained more easily than △T

this method is useful practically.