Solubilities in the system comprising acetonitrile (1) and ethyl octadecanoate (2) have been reported in two publications over a very limited range of temperatures. No data appear to have been reported for the solubility of (1) in (2). Sedgwick et al.¹ determined solubility of ethyl octadecanoate (2) in acetonitrile (1) between 283 and 303 K by the synthetic method. Schmid et al.² measured the upper critical solution temperature for binary solutions of acetonitrile and esters of fatty acids by the synthetic method. The corresponding critical solution composition has been not reported.
The upper critical solution temperature has been reported as 338.2 K² and 338.7 K.¹ These data are in reasonable agreement and thus their average value: UCST = 338.5 ±0.3 K is recommended. Accordingly, all the available data (see the relevant data sheets) must be regarded as tentative.