“…Liquid densities ρ′ of 2-methylnonane and 4-methylnonane (upper panel) and their relative deviations from calculated values ρ′ calc based on eq (lower panel) at ambient pressure as a function of temperature T in comparison with literature data: ○, 2-methylnonane, DMA 5000 M, this work; ●, 2-methylnonane, DMA 4200 M, this work; ◒, 2-methylnonane, SVM 3000, Luning Prak et al; ◐, 2-methylnonane, DSA 5000, Luning Prak et al; ◓, 2-methylnonane, Calingaert and Soroos; ◑, 2-methylnonane, Geist and Cannon; ⊗, 2-methylnonane, pycnometer, Mears et al; ◇, 4-methylnonane, DMA 5000 M, this work; ⧫, 4-methylnonane, DMA 4200 M, this work; diamond top solid, 4-methylnonane, Calingaert and Soroos; diamond right solid, 4-methylnonane, Geist and Cannon; diamond bottom solid, 4-methylnonane, pycnometer, Trew; , eq using coefficients from Table .…”