Diethylene
glycol dibenzoate (DEDB) is nowadays considered as one of the most
promising environment-friendly plasticizers. Isobaric vapor–liquid
equilibrium (VLE) data were measured for the binary systems diethylene
glycol dibenzoate (DEDB) (1) + diethylene glycol (2), DEDB (1) + octyl
benzoate (2) and ternary system DEDB (1) + diethylene glycol (2) +
octyl benzoate (3) at 1.0152 kPa using a modified Othmer still, which
enriched the basic data for DEDB. The UNIFAC model, Wilson model,
and NRTL model were used to predict the VLE data of the binary and
ternary systems. The comparison reveals that on average the most accurate
VLE predictions are obtained with the NRTL model.
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