Solubilities ofL-aspartic,DL-aspartic,DL-glutamic,p-hydroxybenzoic,o-anisic,p-anisic, and itaconic acids in water fromT=278 K toT=345 K

Solubilities ofL-aspartic,DL-aspartic,DL-glutaric,p-hydroxybenzoic,o-anisic,p-anisic, and itaconic acids in water were determined in the temperature range 278 to 345 K. From these solubilities the apparent molar enthalpies of solution atT=298.15 K were derived, and these are: ΔsolHm(L-C4H7O4N,m=0.0379 mol·kg−1)=26.7 kJ·mol−1; ΔsolHm(DL-C4H7O4N,m=0.0590 mol·kg−1)=30.8 kJ·mol−1; ΔsolHm(DL-C5H9O4N,m=0.0965 mol·kg−1)=27.3 kJ·mol−1; ΔsolHm(p-C7H6O3,m=0.0488 mol·kg−1)=41.9 kJ·mol−1; ΔsolHm(o-C8H8O3,m=0.0197 mol·kg−1)=28.5 kJ·mol−1; ΔsolHm(p-C8H8O3,m=0.00169 mol·kg−1)=28.1 kJ·mol−1; and ΔsolHm(C5H6O4,m=0.7605 mol·kg−1)=33.7 kJ·mol−1.