Solubilities of terephthalic acid in amides solvents
Experimental solubilities of terephthalic acid(TA) dissolved in N,N-dimethyl propionamide(DMP),N,N-diethyl propionamide(DEP) and N,N-diethyl acetamide(DEA) were determined in the temperature range of 303.2—363.2 K.The experimental results showed that the solubility of TA increased significantly with an increase in temperature and had different temperature sensitivities in different solvents.The solubility data were correlated by Buchowski equation,and the parameters h and λ were regressed,which gave good agreement with all experimental data.