Phase diagrams of binary systems containing n-alkanes, or cyclohexane, or 1-alkanols and 2,3-pentanedione at atmospheric and high pressure

Solubility of perfumery and fragrance raw materials based on cyclohexane in 1-octanol under ambient and high pressures up to 900 MPa

“…These results present a simple eutectic system with complete miscibility in the liquid phase. The same results were observed in our earlier work for binary systems of 2,3-pentanedione (additive of butter) with 1-alkanols (1-hexadecanol, or 1-octadecanol, or 1-eicosanol) [18]. It is evident that it is mainly the polar substance as CCA or CAA that is responsible for the strong interaction with polar solvent.…”

“…A simple piston-cylinder device, presented in detail in previous papers, was used [16][17][18][19]. The mobile piston was moved by a hydraulic press.…”

“…The initiation of freezing was noticed at a higher pressure than the equilibrium value of this phase transition, observed as an ''overpressure'' effect (the intersection between the lines of the one-and two-phase regions). The equilibrium point was the first from the solid phase line (see our previous work) [16][17][18][19]. The results published are the average of three or more measurements at the intersection point.…”

Solubility of fragrance raw materials in water: Experimental study, correlations, and Mod. UNIFAC (Do) predictions

“…Solid solubilities have been determined using a dynamic (synthetic) method described previously [11][12][13][14]. Mixtures of RFM and water were prepared by weighing the pure components to within 1 Á 10 À4 g. The sample of solute and solvent was heated very slowly (at less than 2 K Á h À1 near the equilibrium temperature) with continuous stirring inside a Pyrex glass cell, placed in a thermostat.…”

“…Until now, we have focused on the determination of phase equilibria, (solid + liquid) and (liquid + liquid) of RFM such as 2,3-pentanodione [11] and substances based on cyclohexane base with 1-octanol, 1-decanol, and 1-undecanol [12,13]. Recently, we have presented the phase equilibria of aliphatic ketones with 1-alkanols [14].…”