Percentage average absolute deviations (% AAD) for the vapour pressure P_vap and saturated-liquid density ρ_sat considered in the estimation procedure for the development of the SAFT-γ Mie model parameters and the assessment of the performance of the model for pure compounds of interest here. N_P and N_ρ are the number of data points of P_vap and ρ_sat, respectively. The references to the experimental data are denoted in each case.

Compound	T/K	N P	% AAD Pvap	Ref.	T/K	N ρ	% AAD ρsat	Ref.
2-Butenoic acid	352–460	23	2.67	33
2-Pentenoic acid	350–450	11	34.5	34
2-Hexenoic acid	352–437	30	11.2	32
3-Methyl-2-butenoic acid	350–530	19	20.7	32	350–530	19	2.18	32
2-Methyl-1-butene	274–413	30	3.63	34	183–408	24	4.37	34
2-Methyl-1,3-butadiene	215–328	58	1.59	34	193–433	14	5.06	34
Average			7.96				3.94