The　experimental　speeds　of　sound　combined　with　Brillouin　frequency　shifts　of　ethyl　laurate　at　temperatures　from　294.97　to　572.89　K　along　six　isobaric　lines　from　0.1　to　10.0　MPa　were　measured　by　Rayleigh-Brillouin　light-scattering　spectroscopy.　The　expanded　relative　uncertainty　in　the　reported　speeds　of　sound　in　ethyl　laurate　is　estimated　to　be　1.3%　(coverage　factor　k　=　2　with　a　confidence　level　of　0.95).　Within　the　temperature　limits　of　303.15-383.15　K　and　at　pressures　up　to　10.0　MPa,　the　derived　thermoacoustic　properties　of　ethyl　laurate　including　density,　specific　isobaric　heat　capacity,　isentropic　compressibility,　isobaric　thermal　expansivity,　isothermal　compressibility,　the　difference　in　isobaric　and　isochoric　heat　capacity,　internal　pressure,　and　intermolecular　free　length　were　studied.　Because　of　the　heavily　updated　data　of　density　and　the　speed　of　sound　in　the　literature,　a　modified　Jacobson＇s　model　for　biodiesels　was　proposed　over　the　temperature　range　from　293.15　to　343.15　K,　which　is　able　to　calculate　the　intermolecular　free　length　of　ethyl　laurate　with　higher　accuracy　compared　with　Jacobson＇s　model.　©　2020　American　Chemical　Society.