This paper focuses on the evaluation of the linear VLE model for systems containing C5 hydrocarbons and acetonitrile by use of an experimental column with 22 sieve-plates (d = 32mm) operated at total reflux and total solvent recirculation. As reported previously[6]

the linear VLE model

which have been used for C5 hydrocarbons DMF systems

is as follows: (1) (2) According to the good agreement of the calculated results using this linear model with expermental results

the conclusion can be made that these linear equilibrium relations are suitable for systems containing C5 hydrocarbons and acetonitrile for technical purposes. The average deviation in concentration between experimental and calculated values is 0.45% (mole) and the temperature deviation is 3.6℃ and 0.7℃ (after correction). The model parameters M and B are also reported