# Critical points of the elements (data page)
## Critical point

| ref | T$_c$(K) | T$_c$(°C) | P$_c$(MPa) | P$_c$(other) | V$_c$(cm$^3$/mol) | ρ$_c$(g/cm$^3$) |
| 1 H hydrogen |||||||
| use | 32.97 | −240.18 | 1.293 | | | |
| CRC.a | 32.97 | −240.18 | 1.293 | | 65 | |
| KAL | 33.2 | | 1.297 | | 65.0 | |
| SMI | | −239.9 | | 13.2 kgf/cm$^2$ | | 0.0310 |
| 1 H hydrogen (equilibrium) |||||||
| LNG | | −240.17 | 1.294 | 12.77 atm | 65.4 | 0.0308 |
| 1 H hydrogen (normal) |||||||
| LNG | | −239.91 | 1.297 | 12.8 atm | 65.0 | 0.0310 |
| 1 D deuterium |||||||
| KAL | 38.2 | | 1.65 | | 60 | |
| 1 D deuterium (equilibrium) |||||||
| LNG | | −234.8 | 1.650 | 16.28 atm | 60.4 | 0.0668 |
| 1 D deuterium (normal) |||||||
| LNG | | −234.7 | 1.665 | 16.43 atm | 60.3 | 0.0669 |
| 2 He helium |||||||
| use | 5.19 | −267.96 | 0.227 | | | |
| CRC.a | 5.19 | −267.96 | 0.227 | | 57 | |
| KAL | 5.19 | | 0.227 | | 57.2 | |
| SMI | | −267.9 | | 2.34 kgf/cm$^2$ | | 0.0693 |
| 2 He helium (equilibrium) |||||||
| LNG | | −267.96 | 0.2289 | 2.261 atm | | 0.06930 |
| 2 He helium-3 |||||||
| LNG | | −269.85 | 0.1182 | 1.13 atm | 72.5 | 0.0414 |
| 2 He helium-4 |||||||
| LNG | | −267.96 | 0.227 | 2.24 atm | 57.3 | 0.0698 |
| 3 Li lithium |||||||
| use | (3223) | (2950) | (67) | | | |
| CRC.b | (3223) | 2950 | (67) | | (66) | |
| 7 N nitrogen |||||||
| use | 126.21 | −146.94 | 3.39 | | | |
| CRC.a | 126.21 | −146.94 | 3.39 | | 90 | |
| KAL | 126.2 | | 3.39 | | 89.5 | |
| SMI | | −147.1 | | 34.7 kgf/cm$^2$ | | 0.3110 |
| 7 N nitrogen-14 |||||||
| LNG | | −146.94 | 3.39 | 33.5 atm | 89.5 | 0.313 |
| 7 N nitrogen-15 |||||||
| LNG | | −146.8 | 3.39 | 33.5 atm | 90.4 | 0.332 |
| 8 O oxygen |||||||
| use | 154.59 | −118.56 | 5.043 | | | |
| CRC.a | 154.59 | −118.56 | 5.043 | | 73 | |
| LNG | | −118.56 | 5.043 | 49.77 atm | 73.4 | 0.436 |
| KAL | 154.6 | | 5.04 | | 73.4 | |
| SMI | | −118.8 | | 51.4 kgf/cm$^2$ | | 0.430 |
| 9 F fluorine |||||||
| use | 144.13 | −129.02 | 5.172 | | | |
| CRC.a | 144.13 | −129.02 | 5.172 | | 66 | |
| LNG | | −129.0 | 5.215 | 51.47 atm | 66.2 | 0.574 |
| KAL | 144.3 | | 5.22 | | 66 | |
| 10 Ne neon |||||||
| use | 44.4 | −228.7 | 2.76 | | | |
| CRC.a | 44.4 | −228.7 | 2.76 | | 42 | |
| LNG | | −228.71 | 2.77 | 27.2 atm | 41.7 | 0.4835 |
| KAL | 44.4 | | 2.76 | | 41.7 | |
| SMI | | −228.7 | | 26.8 kgf/cm$^2$ | | 0.484 |
| 11 Na sodium |||||||
| use | (2573) | (2300) | (35) | | | |
| CRC.b | (2573) | 2300 | (35) | | (116) | |
| 15 P phosphorus |||||||
| use | 994 | 721 | | | | |
| CRC.a | 994 | 721 | | | | |
| LNG | | 721 | | | | |
| 16 S sulfur |||||||
| use | 1314 | 1041 | 20.7 | | | |
| CRC.a | 1314 | 1041 | 20.7 | | | |
| LNG | | 1041 | 11.7 | 116 atm | | |
| KAL | 1314 | | 20.7 | | | |
| SMI | | 1040 | | | | |
| 17 Cl chlorine |||||||
| use | 416.9 | 143.8 | 7.991 | | | |
| CRC.a | 416.9 | 143.8 | 7.991 | | 123 | |
| LNG | | 143.8 | 7.71 | 76.1 atm | 124 | 0.573 |
| KAL | 416.9 | | 7.98 | | 124 | |
| SMI | | 144.0 | | 78.7 kgf/cm$^2$ | | 0.573 |
| 18 Ar argon |||||||
| use | 150.87 | −122.28 | 4.898 | | | |
| CRC.a | 150.87 | −122.28 | 4.898 | | 75 | |
| LNG | | −122.3 | 4.87 | 48.1 atm | 74.6 | 0.536 |
| KAL | 150.9 | | 4.90 | | 74.6 | |
| SMI | | −122 | | 49.7 kgf/cm$^2$ | | 0.531 |
| 19 K potassium |||||||
| use | (2223) | (1950) | (16) | | | |
| CRC.b | (2223) | 1950 | (16) | | (209) | |
| 33 As arsenic |||||||
| use | 1673 | 1400 | | | | |
| CRC.a | 1673 | 1400 | | | 35 | |
| LNG | | 1400 | | | | |
| 34 Se selenium |||||||
| use | 1766 | 1493 | 27.2 | | | |
| CRC.a | 1766 | 1493 | 27.2 | | | |
| LNG | | 1493 | | | | |
| 35 Br bromine |||||||
| use | 588 | 315 | 10.34 | | | |
| CRC.a | 588 | 315 | 10.34 | | 127 | |
| LNG | | 315 | 10.3 | 102 atm | 135 | 1.184 |
| KAL | 588 | | 10.3 | | 127 | |
| SMI | | 302 | | | | 1.18 |
| 36 Kr krypton |||||||
| use | 209.41 | −63.74 | 5.50 | | | |
| CRC.a | 209.41 | −63.74 | 5.50 | | 91 | |
| LNG | | −63.75 | 5.50 | 54.3 atm | 91.2 | 0.9085 |
| KAL | 209.4 | | 5.50 | | 91.2 | |
| 37 Rb rubidium |||||||
| use | (2093) | (1820) | (16) | | | |
| CRC.b | (2093) | 1820 | (16) | | (247) | |
| LNG | | 1832 | | | 250 | 0.34 |
| 53 I iodine |||||||
| use | 819 | 546 | 11.7 | | | |
| CRC.a | 819 | 546 | | | 155 | |
| LNG | | 546 | 11.7 | 115 atm | 155 | 0.164 |
| KAL | 819 | | | | 155 | |
| SMI | | 553 | | | | |
| 54 Xe xenon |||||||
| use | 289.77 | 16.62 | 5.841 | | | |
| CRC.c | 289.77 | 16.62 | 5.841 | | 118 | |
| LNG | | 16.583 | 5.84 | 57.64 atm | 118 | 1.105 |
| KAL | 289.7 | | 5.84 | | 118 | |
| SMI | | 16.6 | | 60.2 kgf/cm$^2$ | | 1.155 |
| 55 Cs caesium |||||||
| use | 1938 | 1665 | 9.4 | | | |
| CRC.d | 1938 | 1665 | 9.4 | | 341 | |
| LNG | | 1806 | | | 300 | 0.44 |
| 80 Hg mercury |||||||
| use | 1750 | 1477 | 172.00 | | | |
| CRC.a | 1750 | 1477 | 172.00 | | 43 | |
| LNG | | 1477 | 160.8 | 1587 atm | | |
| KAL | 1750 | | 172 | | 42.7 | |
| SMI | | 1460±20 | | 1640±50 kgf/cm$^2$ | | 0.5 |
| 86 Rn radon |||||||
| use | 377 | 104 | 6.28 | | | |
| CRC.a | 377 | 104 | 6.28 | | | |
| LNG | | 104 | 6.28 | 62 atm | 139 | 1.6 |
| KAL | 377 | | 6.3 | | | |
| SMI | | 104 | | 64.1 kgf/cm$^2$ | | |