“…Deviations of speed of sound between the experimental data of this work and other different authors and the fit according to eq for MTBE liquid: □, p = 1.0 MPa; ○, p = 2.5 MPa; △, p = 4.0 MPa; ▽, p = 5.5 MPa; ◇ with ×, p = 7.0 MPa; ⬡ with ×, p = 8.5 MPa; ☆, p = 10.0 MPa; ■, Gonzalez-Olmos et al; − ●, Pineiro et al; ▲, Linek et al; ▼, Pal et al; ⧫, Sedlakova et al; ◀, Tojo et al; , ▶, Arce et al; − ⬢, Krishnaiah et al; ★, Legido et al …”