Solubility of Pyrene in Ternary Propanol + Butanol + 2,2,4-Trimethylpentane Solvent Mixtures at 299.15 K

Abstract

Experimental solubilities are reported for pyrene dissolved in ternary 1-propanol + 1-butanol + 2,2,4-trimethylpentane, 2-propanol + 1-butanol + 2,2,4-trimethylpentane, 1-propanol + 2-butanol + 2,2,4-trimethylpentane, and 2-propanol + 2-butanol + 2,2,4-trimethylpentane solvent mixtures at 26°C and atmospheric pressure. Nineteen compositions were studied for each of the four solvent systems. Also measured were the solubilities of pyrene in binary 1-butanol + 2,2,4-trimethylpentane mixtures. Results of these measurements are used to test the predictive ability of the ternary solvent form of the Combined NIBS/Redlich-Kister equation. Computations showed that the model predicted the observed solubility behavior to within an overall average absolute deviation of ∼1.6%, which is comparable to the experimental uncertainty of (1.5%.

IUPAC-NIST Solubility Data Series. 98. Solubility of Polycyclic Aromatic Hydrocarbons in Pure and Organic Solvent Mixtures: Revised and Updated. Part 1. Binary Solvent Mixtures

“…Acree and co-workers 32,[81][82][83] measured the solubility of pyrene in several binary alkane + 1-butanol, alkane + 2-butanol, alkane + 2-methyl-1-propanol, and alkane + 1-octanol solvent mixtures at 299.15 K. The alkane solvents included hexane, heptane, octane, cyclohexane, methylcyclohexane, 2,2,4-trimethylpentane, and tert-butylcyclohexane (also called (1,1-dimethylethyl)cyclohexane). There has only been a single experimental determination for the solubility of pyrene in each of the binary solvent systems studied.…”

IUPAC-NIST Solubility Data Series. 98. Solubility of Polycyclic Aromatic Hydrocarbons in Pure and Organic Solvent Mixtures: Revised and Updated. Part 2. Ternary Solvent Mixtures

“…Molar concentrations were determined by spectrophotometric measurements at 372 nm. 30,32 determined the solubility of pyrene in ternary heptane + propanol + butanol, cyclohexane + propanol + butanol, and 2,2,4-trimethylpentane + propanol + butanol solvent mixtures at 299.15 K. There has only been a single experimental determination for the solubility of pyrene in each of the ternary solvent systems studied. In the absence of replicate independent measurements, the experimental values were evaluated by curve-fitting the measured binary solvent solubility data to Eq.…”