Liquid−Liquid Equilibria of Water + Pentan-1-ol + 2,6,6-Trimethylbicyclo[3.1.1]hep-2-ene or 6,6-Dimethyl-2-methylenebicyclo[3.1.1]heptane at (293.15, 303.15, 313.15, and 323.15) K

Mutual solubility data of water + pentan-1-ol and liquid−liquid equilibrium of water + pentan-1-ol +2,6,6-trimethylbicyclo[3.1.1]hep-2-ene (α-pinene) and water + pentan-1-ol + 6,6-dimethyl-2-methylenebicyclo[3.1.1]heptane (β-pinene) have been measured experimentally at (293.15, 303.15, 313.15, and 323.15) K under atmospheric pressure. The estimated uncertainty of phase composition and temperature were about (0.0005 and 0.05) K, respectively. The experimental ternary liquid−liquid equilibrium data have been simultaneously predicted and correlated by the extended and modified UNIQUAC models.