| CH4 | 162.70 + 291.23(1 − T /Tcri)0.35 + 142.42(1 − T /Tcri) − 121.96(1 − T /Tcri)2 + 107.38(1 − T /Tcri)3 | Ttri-Tcri | Yu et al. (2023) |
| C2H6 | 206.20 + 390.80(1 − T /Tcri)0.35 + 161.80(1 − T /Tcri) − 90.702(1 − T /Tcri)2 + 88.144(1 − T /Tcri)3 | Ttri-Tcri | Yu et al. (2023) |
| C2H4 | 214.20 + 402.42(1 − T /Tcri)0.35 + 177.02(1 − T /Tcri) − 99.181(1 − T /Tcri)2 + 101.65(1 − T /Tcri)3 | Ttri-Tcri | Yu et al. (2023) |
| C2H2 | 63.816/0.274481+(1−T /Tcri)0.28752 | Ttri-Tcri | Daubert & Danner (1989) |
| C4H2 | 2165.6 − 5.2315T | Ttri-278-[Tcri] | Yu et al. (2023) |
| C6H6 | 304.70 + 596.41(1 − T /Tcri)0.35 + 292.04(1 − T /Tcri) - 296.31(1 − T /Tcri)2 + 378.24(1 − T /Tcri)3 | Ttri-Tcri | Yu et al. (2023) |
| C3H8 | 220.50 + 429.60(1 − T /Tcri)0.35 + 167.26(1 − T /Tcri) − 87.547(1 − T /Tcri)2 + 96.621(1 − T /Tcri)3| Ttri-Tcri | Yu et al. (2023) |
|
| C3H6 | 229.60 + 447.91(1 − T /Tcri)0.35 + 181.53(1 − T /Tcri) − 102.10(1 − T /Tcri)2 + 121.01(1 − T /Tcri)3 | Ttri-Tcri | Yu et al. (2023) |
| C3H4-a | 243.20 + 508.18(1 − T /Tcri)0.35 + 66.874(1 − T /Tcri) + 232.07(1 − T /Tcri)2 − 159.04(1 − T /Tcri)3 | Ttri-Tcri | Kroenlein et al. (2011) |
| C3H4-p | 244.90 + 469.73(1 − T /Tcri)0.35 + 409.34(1 − T /Tcri) − 658.50(1 − T /Tcri)2 + 600.71(1 − T /Tcri)3 | Ttri-Tcri | Yu et al. (2023) |
| HCN | 195.00 + 451.55(1 − T /Tcri)0.35 + 1249.0(1 − T /Tcri) − 3452.1(1 − T /Tcri)2 + 3809.9(1 − T /Tcri)3 | Ttri-Tcri | Kroenlein et al. (2011) |
| HC3N | 1189.6 − 1.2850T | Ttri–315.2-[Tcri] | Dannhauser & Flueckinger (1963) |
| CO2 | 467.60 + 925.62(1 − T /Tcri)0.35 + 465.51(1 − T /Tcri) − 412.21(1 − T /Tcri)2 + 509.61(1 − T /Tcri)3 | Ttri-Tcri | Yu et al. (2023) |
| CH3CN | 247.37 + 556.17(1 − T /Tcri)0.35 + 214.71(1 − T /Tcri) + 34.189(1 − T /Tcri)2 + 34.820(1 − T /Tcri)3 | Ttri-Tcri | Kroenlein et al. (2011) |
| C2H5CN | 244.85 + 447.66(1 − T /Tcri)0.35 + 601.25(1 − T /Tcri) − 658.21(1 − T /Tcri)2 + 497.05(1 − T /Tcri)3 | Ttri-Tcri | Kroenlein et al. (2011) |
| C2H3CN | 252.09 + 757.67(1 − T /Tcri)0.35 − 448.60(1 − T /Tcri) + 1307.2(1 − T /Tcri)2 − 944.27(1 − T /Tcri)3 | Ttri-Tcri | Kroenlein et al. (2011) |
C2N2| 352.99 + 734.98(1 − T /Tcri)0.35 + 191.04(1 − T /Tcri) + 216.84(1 − T /Tcri)2 − 248.71(1 − T /Tcri)3 | Ttri-Tcri | Kroenlein et al. (2011) |
|
C4N2| 970.8 | 298.15 | Rumble (2020) |
|