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

Significant information regarding the molecular interactions in the ternary solution consisting of Vitamin B3 (Niacin), water and polyethylene glycols (PEG 200/PEG 600) are attained from the calculated volumetric and acoustic parameters. Initially, the density (ρ) and speed of sound (c) for polyethylene glycols (0.1 to 0.5) mol∙kg−1 in aqueous niacin (0.01, 0.02, and 0.03) mol∙kg−1 were measured under 0.1 MPa pressure as a function of...