The Viscous Properties of Diols. IV. 1,2- and 1,4-Butanediol in Butanols Solutions

Peculiarities in the physical properties of hydroxylic compounds result essentially from the molecular ordering due to hydrogen bond formation. In case of diols, which are among the most self-associated liquids, the structure of the intermolecular entities depends mainly on the mutual position of OH groups within the hydrocarbon chain of the molecule. Diols are widely used in industry, mainly because of their large temperature range of existence in the liquid state and favorable viscous properties. As highly self-associated liquids, the diols are rather viscous (especially at low temperatures), and they are used often in mixtures with water or alcohols [1, 2]. This paper presents the shear viscosity of one of the most frequently used mixtures of diols with alcohols: 1,2and 1,4-butanediols + three isomers of butyl alcohol: n-, sand t-butanol.