Table 5.

Optimized Values for the Correlation Parameters in the Modified Apelblat and λh Model Equations Used for the Correlation of the Mole Fraction Solubility of MBQ-167 (1) in All Neat and Binary Solvent Mixtures along with the Respective ARD %

	model
	Apelblat				λh
solvent	A	B	C	ARD %a	λ	h	ARD %a
acetonitrile	−443.1194	16425.3698	67.1173	0.2361	0.25545	16592.5453	3.3217
1-butanol	−196.1966	4822.7228	30.4414	0.2507	0.14561	31937.1506	3.4100
2-butanol	−156.6310	2204.0637	24.9597	0.1832	0.24305	23103.7549	3.2872
ethanol	−386.4335	13683.1852	58.5322	0.3538	0.0717	61290.6492	4.9541
ethyl acetate	−255.2047	8870.7949	38.6984	0.0878	0.11254	24903.2163	1.0796
methanol	−454.6354	16965.7247	68.5615	0.2679	0.04717	85040.3310	4.0599
1-propanol	−362.0488	12446.2146	55.0297	0.4779	0.12821	36844.6411	4.7347
2-propanol	−344.6907	11104.7369	52.6479	0.5068	0.12637	43024.7643	4.1343
ethyl acetate (2) + heptane (3)b
w3 = 0.08	−330.2920	12212.7433	49.8803	0.0989	0.11557	25840.0903	1.8384
w3 = 0.16	−114.1324	2591.4733	17.5737	0.1110	0.05911	42962.2196	0.6763
w3 = 0.23	−204.1964	6521.3163	31.0291	0.0150	0.06593	43165.6726	0.8950
w3 = 0.34	−46.1346	−515.8387	7.3783	0.1471	0.03264	75828.3582	0.0229
w3 = 0.43	−61.3324	71.5542	9.6288	0.0513	0.02517	103636.549	0.1114
ethanol (2) + water (3)c
w3 = 0.24	−407.8217	14155.5350	61.6953	1.8304	0.02921	183599.167	6.5366
w3 = 0.36	−363.8653	12627.8448	54.7877	0.4128	0.00674	645411.633	3.6174
w3 = 0.46	−362.2844	12133.3526	54.6336	0.7647	0.00537	953914.659	6.0855

^aARD % represents the corresponding percentage average relative deviation.

^bw₃ is the mass fraction of heptane (3) in a binary ethyl acetate (2) + heptane (3) mixture.

^cw₃ is the mass fraction of water (3) in a binary ethanol (2) + water (3) mixture.