Volumetric and ultrasonic study of polyethylene glycols in aqueous solutions of niacin at different temperatures

Measurement of the Density and Ultrasonic Speed of the Sound of Poly(ethylene glycols) (600 and 6000) in Aqueous Vitamin B5 Solutions at Different Temperatures

“…Further, it is noticed that as the concentration of d -Panthenol is increased, the negativity of the K ϕ,S values decreases, which indicates that the molecules of water are less compressible than the water molecules in bulk around any of the ionic charge groups of the poly­(ethylene glycols), and thus, as a consequence, the structural compressibility of water is lost, which forms an arrangement around the solute with the water molecules. This behavior establishes the survival of solute–solvent interactions in the ternary mixture along with the dipole–dipole interactions within the −OH groups of poly­(ethylene glycols) and water molecules in their close vicinity. − …”

PVT Properties of Binary Systems of Poly(ethylene glycol mono-4-octylphenyl ether) with Anisole or Benzyl Alcohol at Pressures up to 50 MPa

“…In addition, PEG is considered as a green solvent that is natural, cost-effective, safe, recyclable, biodegradable, nonflammable, simple, environmentally friendly, and abundantly available . Among several others, some representative papers published in recent years reported the density data of mixtures containing oligomeric poly­(ethylene glycols) (PEGs) with organic solvents or other oligomeric materials. − Most of these measurements were performed at atmospheric pressure, and only Chakraborty et al and Tiwikrama et al conducted the density measurements at high pressures. PEGs, such as poly­(ethylene glycol) ethers, are also useful raw materials in industrial applications.…”

Volumetric, Viscometric, and Refractive Index Studies of Drug Nicotinic Acid in Aqueous d-Xylose/l-Arabinose Solutions from 293.15 to 313.15 K: Insights into Solute–Solute and Solute–Solvent Interactions

“…Moreover, as a clinical drug, nicotinic acid can reduce the concentration of blood cholesterol, triglycerides, and β-lipoprotein. − Importantly, it is a well-established drug that is used as a vasodilator in the treatment of ischemic heart disease. Owing to the multiple effects of nicotinic acid, many researchers are interested in it and have devoted extensive research effort to it and achieved valuable results. ,,− For example, Pan et al and Yang et al . measured the density, viscosity, and electrical conductance of nicotinic acid in aqueous polyethanol solution and aqueous dextran solution and obtained the partial molar volume of nicotinic acid and the B coefficient of viscous flow.…”