Vapor-liquid equilibrium (VLE) data are presented for the ternary system ethanol-tert-amyl methyl ether (TAME)-toluene at 333.15 K. The experimental results were measured by using a Boublik vapor-liquid recirculation still. The results are compared with values predicted from the PRSV equation of state with the modified Huron-Vidal first order (MHV1) and Wong-Sandler (WS) mixing rules. Good agreement is obtained. (C) 1998 Elsevier Science B.V. All rights reserved.