Study On Thermodynamic Property Of Aromatic Derivatives In Water/Alcohol Solutions

Aromatic hydrocarbons and their derivatives are important finechemical materials and have been widely used in the fields of dyestuff,pigment, pharmaceutical, and agricultural chemical and so on. However,these compounds are highly toxic, and release easi ly into the environmentduring the production and use process, which would cause environmentalpollution. So it is of great significance to investigate thermodynamicproperty of these compouds in water and alcohol solvents.Densities and viscosities of naphthalen-1-ol, naphthalen-2-ol,1-aminonaphthalene,2,4-diaminotoluene,2,6-diaminotoluene and sodium4-amino-1-naphthalenesulfonate in solvents of water, ethanol,propan-1-ol, and butan-1-ol were measured from293.15K to343.15K bya vibrating tube density meter DMA4500M (Anton Paar, Austria) and anIvisc Lauda Ubbelohde capillary viscometer (Lauda Co., Germany),respectively. The influence of temperature and concentration on densityand viscosity were studied, and G XLPDU HV’V equation and extendedJones-Dole equation were used to correlate density and viscosity data,respectively. Apparent molar volume, the limiting apparent molar volumeat infinite dilution, viscosity B-coefficient and the activation energy ofviscous flow were calculated through experimental data, and wereanalyzed and discussed through solute-solute and solute-solventinteractions between compenent molecules.Besides the experimental data, the literature data of binary organicsolutions reported in recent years were collected and analysed. A positiongroup contribution method was introduced to estimate the densities andviscosities of binary organic solutions at different tempretures anddifferent concentrations. The group contribution and the positiondistribution factor were considered in this model, and this model coulddistinguish most of isomers including cis and trans or Z and E structuresof organic compounds. Comparison results between experimental andcalculated data indicate that the model has good prediction performance. The overall average deviation is0.8%for the prediction of density, and9.9%for the prediction of viscosity.