The thermal pressure coefficients and densities of six plasticizers for dimthyl phthalate
diethyl malonate
triethyl phosphate
tributyl phosphate
dibutyl oxalate
dibutyl sebacate have been measured over the temperature range of 25-85℃.The augmented van der Waals model is used to correlate the experimental data.A method of predicting the internal pressure of the plasticizers is established
and the new solubility parameters for thirty plasticizers are obtained.