The temperature dependence of the density along the coexistence curve of benzene in the vicinity of the critical point and in a wide temperature range down to the triple point was investigated, The original results as well as literature data were statistically treated, A regression analysis of data on the critical exponents and critical amplitudes used as fitting parameters in a model equations was curried out, An adequate description of the order parameter by the three-term scaling equation in the entire two-phase (liquid gas) region of benzene was obtained with experimental values ofβ 0 = 0.352 ± 0,003 and Δ = 1.3 ± 0.2, which are inconsistent with the Ising modelβ(0=0.325) and the Wegner exponent (Δ=0.5). respectively, It is shown that the equation with fixed classical exponents does not adequately describe the experimental data even far from the critical point.