Nitrogen Oxide (N2O4) N2O4(cr,l) T(K) Cp S -[G-H(Tr)]/T H-H(Tr) delta-f H delta-f G log Kf 0 0. 0. INFINITE -36.872 -30.399 -30.399 INFINITE 100 60.702 56.130 392.476 -33.635 -35.874 9.156 -4.783 200 91.701 108.002 237.881 -25.976 -36.947 54.843 -14.324 261.950 110.918 135.224 210.426 -19.699 CRYSTAL <--> LIQUID 261.950 136.843 191.160 210.426 -5.047 TRANSITION 298.15 142.509 209.198 209.198 0. -19.564 97.521 -17.085 300 142.842 210.081 209.201 0.264 -19.463 98.247 -17.106 400 160.833 253.638 215.019 15.448 -13.139 136.576 -17.835 500 178.824 291.459 226.598 32.431 -5.213 173.120 -18.086