Grasas y Aceites, Vol 46, No 4-5 (1995)

A Study of mixtures of organic solvents and triglycerides of linseed oil or the free fatty acids. II.- Application to the viscosity of the Andrade, Krone, McAllister and Hildebrand equations


https://doi.org/10.3989/gya.1995.v46.i4-5.940

C. Mantell Serrano
Departamento de Ingeniería Química. Universidad de Cádiz, Spain

M. J. Muñoz Cueto
Departamento de Ingeniería Química. Universidad de Cádiz, Spain

M. Galán Vallejo
Departamento de Ingeniería Química. Universidad de Cádiz, Spain

M. Rodríguez Rodríguez
Departamento de Ingeniería Química. Universidad de Cádiz, Spain

Abstract


A regression study of Andrade, Krone, McAllister and Hildebrand equations with experimental data of viscosity of mixtures of triglycerides or free fatty acids and trichloroethylene, tetrachloroethylene and hexane was carried out. Temperature range studied was 278-313 K in steps of 5K.
The results showed that the Hildebrand equation presents the best fit for all the viscosity data of the mixtures studied, tending towards a lineal or parabolic function of its parameters.
Andrade and Krone equations presented acceptable fits for all mixtures studied except the fatty acids and hexane mixture. The McAllister equation was applicable only to mixtures with tetrachloroethylene.

Keywords


Andrade equation; Fatty acids mixture; Hildebrand equation; Krone equation; McAllister equation; Triglycerides mixture; Viscosity

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