摘要:Based on the molecular aggregation model the virial equation for molcular aggregation was proposed, and then used to estimate the saturated vapor phase density and vaporization enthalpy data for 36 substances, including strongly polar, associated compounds. The agree-ment between calculated and experimented data was quite satisfactory. It shows that the virial equation of molecular aggregation here in is well suited to describe the thermodynamic behavotir of saturated vapors.