The solubilities of heptane, petroleum ether, phosphorus trichloride and benzene in the [triethylamine hydrochloride]-x[AlCl3] (x = 0.67) ionic liquid in the temperature range from (293.16 to 332.60) K and the solubilities of the ionic liquid in benzene and phosphorus trichloride in the temperature range from (293.16 to 324.95) K have been measured using a cloud-point method. The uncertainty in the solubility was about 3%. The density of [triethylamine hydrochloride]-x[AlCl3] (x = 0.67) has also been measured with an uncertainty of 1%.