Solubility of Terephthaldialdehyde in N-Methyl-2-pyrrolidone and Solid-Liquid Phase Equilibrium for Ternary Systems of Terephthalic Acid + Terephthaldialdehyde + N,N-Dimethylformamide/N-Methyl-2-pyrrolidone Li, X.; Liu, Y.; Xu, A.; Ma, Z.; Wang, J.; Zhao, H.; Journal of Chemical & Engineering Data 2018, 63, 2081-2090