Determination of Isomeric Nitriles with High-Performance Liquid Chromatography after Separation by Derivatization

Pearse, George A.; Bovenzi, Brad A.

doi:10.1006/mchj.1996.1473

Cited by 1 publication

(2 citation statements)

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“…Using the Agilent 1260 HPLC containing a G1311C quaternary pump with a vacuum degasser, a G1314F UV detector, and a G1329B autosampler, the compositions of equilibrated liquids were measured. The UV detector’s detection wavelength was 254 nm . The test procedure was carried out on a 250 mm × 4.6 mm reverse phase column (Waters C18).…”

Section: Discussionmentioning

confidence: 99%

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Solubility and Molecular Interactions of 4-Cyanopyridine in Aqueous Blends at Temperatures from 278.15 to 318.15 K

et al. 2022

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This study investigated the solubility, computational methods, and molecular interactions of 4-cyanopyridine in methanol/acetone/ethanol/n-propanol + water from 278.15 to 318.15 K. Solubility was evaluated using an isothermal dissolving approach under a pressure of 101.0 kPa. Pure water solvents were found to have the lowest solubility magnitude at 278.15 K, whereas pure organic solvents had the highest at 318.15 K. Solubility data increased monotonically with the increase of temperature and methanol/acetone/ethanol/n-propanol composition for all blends. The impact of interactions on 4-cyanopyridine solubility variation was inspected, specifying that the solubility parameter as well as dipolarity-polarizability of aqueous solutions mainly contributed to solubility data variation. To correlate the solubility determined here, the modified Wilson, Apelblat, and van’t Hoff-Jouyban–Acree models, along with Jouyban–Acree representations, were utilized, with a maximum relative average deviation of 5.36%.

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Section: Discussionmentioning

confidence: 99%

“…The UV detector's detection wavelength was 254 nm. 27 The test procedure was carried out on a 250 mm × 4.6 mm reverse phase column (Waters C18). The mobile phase, pure methanol, had a speed of 1 mL min −1 .…”

Section: Journal Of Chemical and Engineeringmentioning

confidence: 99%