Critical　temperature　T-c　and　critical　pressure　p(c)　of　the　mixtures　of　ethanol　and　biodiesel　surrogates　(ethanol　+　methyl　butanoate,　ethanol　+　ethyl　propanoate,　ethanol　+　methyl　hexanoate,　methyl　butanoate+　ethyl　propanoate　and　ethanol　+　methyl　butanoate　+　ethyl　propanoate)　were　measured　via　a　flow　method.　A　linear　decrease　in　T-c　and　an　increase　in　p(c)　of　three　binary　mixtures　can　be　observed　with　the　increasing　mole　fraction　of　ethanol.　Despite　the　mole　fraction　of　ethyl　propanoate　increases,　critical　curves　of　the　ternary　mixture　change　almost　linearly　with　the　mole　fraction　of　ethanol.　Critical　properties　of　the　binary　mixtures　were　interrelated　with　Redlich-Kister　equations　and　PR-WS　equations　and　predicted　by　He　equations.　Maximum　AADs　for　T-c　and　p(c)　using　Redlich-Kister　equations　are　0.08%　and　0.65%.　There　is　a　great　agreement　between　our　experimental　data　and　calculated　values　from　two　correlations　for　the　critical　parameters　of　ternary　mixture.　(C)　2019　Elsevier　B.V.　All　rights　reserved.