Viscometric behavior of binary systems of methyl ethyl ketone with methylene chloride, 1,2-dechloroethane, trochloroethene, tetracholoroethene and cyclohexane

Abstract

Dynamic viscosities, η, have been measured for binary systems of methyl ethyl ketone (MEK) with methylene chloride (CH₂Cl₂),1,2-dichloroethane (CH₂ClCH₂Cl), trichloroethene(CHClCCl₂), tetrachloro thene (CCl₂CCl₂) and cyclohexane (c-C₆H₁₂) at 303.15 K. The values of <img src='http://www.niscair.res.in/jinfo/delta.gif' border=0>η which refer to the deviations of mixture viscosities from the values arising from mole fraction mixture law are found to be positive for MEK-CH₂Cl₂, MEK-CHClCCl₂ and MEK-CHClCCl₂, and negative for MEK-CH₂ClCH₂CI and MEK-c-C₆H₁₂. The values of the interaction parameter d have also been calculated from the equation In η_mix= x₁ln η₁+ x₁ln η₂+ x₁x₂d, where η_mix, η₁ and η₂refer to the dynamic viscosities of the mixture component 1 and component 2 respectively. The parameter d has been found to be positive for MEK-CH₂Cl₂, MEK-CH₂CICH₂Cl, MEK-CHClCCl₂ and MEK-CCl₂CCl₂, and negative for MEK-c-C₆H₁₂.Values of Dη and d show that MEK form adducts with CH₂Cl₂, CH₂ClCH₂Cl, CHClCCl₂ and CCl₂CCl₂.