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Critical points of the elements (data page)

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Chemical data page

Main article:Critical point

Critical point

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ref	T_c(K)	T_c(°C)	P_c(MPa)	P_c(other)	V_c(cm³/mol)	ρ_c(g/cm³)
1 Hhydrogen
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		13.2kgf/cm²		0.0310
1 Hhydrogen (equilibrium)
LNG		−240.17	1.294	12.77 atm	65.4	0.0308
1 Hhydrogen (normal)
LNG		−239.91	1.297	12.8 atm	65.0	0.0310
1 Ddeuterium
KAL	38.2		1.65		60
1 Ddeuterium (equilibrium)
LNG		−234.8	1.650	16.28 atm	60.4	0.0668
1 Ddeuterium (normal)
LNG		−234.7	1.665	16.43 atm	60.3	0.0669
2 Hehelium
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/cm²		0.0693
2 Hehelium (equilibrium)
LNG		−267.96	0.2289	2.261 atm		0.06930
2 Hehelium-3
LNG		−269.85	0.1182	1.13 atm	72.5	0.0414
2 Hehelium-4
LNG		−267.96	0.227	2.24 atm	57.3	0.0698
3 Lilithium
use	(3223)	(2950)	(67)
CRC.b	(3223)	2950	(67)		(66)
7 Nnitrogen
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/cm²		0.3110
7 Nnitrogen-14
LNG		−146.94	3.39	33.5 atm	89.5	0.313
7 Nnitrogen-15
LNG		−146.8	3.39	33.5 atm	90.4	0.332
8 Ooxygen
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/cm²		0.430
9 Ffluorine
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 Neneon
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/cm²		0.484
11 Nasodium
use	(2573)	(2300)	(35)
CRC.b	(2573)	2300	(35)		(116)
15 Pphosphorus
use	994	721
CRC.a	994	721
LNG		721
16 Ssulfur
use	1314	1041	20.7
CRC.a	1314	1041	20.7
LNG		1041	11.7	116 atm
KAL	1314		20.7
SMI		1040
17 Clchlorine
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/cm²		0.573
18 Arargon
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/cm²		0.531
19 Kpotassium
use	(2223)	(1950)	(16)
CRC.b	(2223)	1950	(16)		(209)
33 Asarsenic
use	1673	1400
CRC.a	1673	1400			35
LNG		1400
34 Seselenium
use	1766	1493	27.2
CRC.a	1766	1493	27.2
LNG		1493
35 Brbromine
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 Krkrypton
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 Rbrubidium
use	(2093)	(1820)	(16)
CRC.b	(2093)	1820	(16)		(247)
LNG		1832			250	0.34
53 Iiodine
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 Xexenon
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/cm²		1.155
55 Cscaesium
use	1938	1665	9.4
CRC.d	1938	1665	9.4		341
LNG		1806			300	0.44
80 Hgmercury
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/cm²		0.5
86 Rnradon
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/cm²

References

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CRC.a-d

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David R. Lide (ed),CRC Handbook of Chemistry and Physics, 85th Edition, online version.CRC Press. Boca Raton, Florida, 2003; Section 6, Fluid Properties; Critical Constants. Also agrees with Celsius values from Section 4: Properties of the Elements and Inorganic Compounds, Melting, Boiling, Triple, and Critical Point Temperatures of the Elements

Estimated accuracy forTc andPc is indicated by the number of digits. Above 750 KTc values may be in error by 10 K or more.Vc values are not assumed accurate more than to a few percent. Parentheses indicate extrapolated values. From these sources:

(a) D. Ambrose,Vapor-Liquid Constants of Fluids, in R.M. Stevenson, S. Malanowski,Handbook of the Thermodynamics of Organic Compounds, Elsevier, New York, (1987).
(b) I.G. Dillon, P.A. Nelson, B.S. Swanson,J. Chem. Phys.44, 4229, (1966).
(c) O. Sifner, J. Klomfar,J. Phys. Chem. Ref. Data23, 63, (1994).
(d) N.B. Vargaftik,Int. J. Thermophys.11, 467, (1990).

LNG

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J.A. Dean (ed),Lange's Handbook of Chemistry (15th Edition), McGraw-Hill, 1999; Section 6; Table 6.5 Critical Properties

KAL

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National Physical Laboratory,Kaye and Laby Tables of Physical and Chemical Constants; D. Ambrose, M.B. Ewing, M.L. McGlashan,Critical constants and second virial coefficients of gases (retrieved Dec 2005)

SMI

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W.E. Forsythe (ed.),Smithsonian Physical Tables 9th ed., online version (1954; Knovel 2003). Table 259, Critical Temperatures, Pressures, and Densities of Gases

v t e Chemical elements data
Elements	List of chemical elements—atomic mass, atomic number, symbol, name Periodic table
Data	Abundance of the chemical elements in Earth's crust, sea water, Sun and Solar System data page Atomic radius empirical, calculated, van der Waals radius, covalent radius data page Boiling point data page Critical point data page Density solid, liquid, gas data page Elastic properties of the elements:Young's modulus,Poisson's ratio,bulk modulus,shear modulus data page Electrical resistivity data page Electron affinity data page Electron configuration data page Electronegativity (Pauling, Allen scale) data page Hardness:Mohs hardness,Vickers hardness,Brinell hardness data page Heat capacity data page Heat of fusion data page Heat of vaporization data page Ionization energy (in eV) and molar ionization energies (in kJ/mol) data page Melting point data page Molar ionization energy Oxidation state data table Speed of sound data page Standard atomic weight Thermal conductivity data page Specific heat capacity Thermal expansion data page Vapor pressure data page

Abundance of the chemical elements in Earth's crust, sea water, Sun and Solar System
- data page
Atomic radius empirical, calculated, van der Waals radius, covalent radius
- data page
Boiling point
- data page
Critical point
- data page
Density solid, liquid, gas
- data page
Elastic properties of the elements:Young's modulus,Poisson's ratio,bulk modulus,shear modulus
- data page
Electrical resistivity
- data page
Electron affinity
- data page
Electron configuration
- data page
Electronegativity (Pauling, Allen scale)
- data page
Hardness:Mohs hardness,Vickers hardness,Brinell hardness
- data page
Heat capacity
- data page
Heat of fusion
- data page
Heat of vaporization
- data page
Ionization energy (in eV) and molar ionization energies (in kJ/mol)
- data page
Melting point
- data page
Molar ionization energy
Oxidation state
- data table
Speed of sound
- data page
Standard atomic weight
Thermal conductivity
- data page
Specific heat capacity
Thermal expansion
- data page
Vapor pressure
- data page

Periodic table

Periodic table forms

Sets of elements

By periodic table structure

Groups	1 (Hydrogen andalkali metals) 2 (Alkaline earth metals) 3 4 5 6 7 8 9 10 11 12 13 (Triels) 14 (Tetrels) 15 (Pnictogens) 16 (Chalcogens) 17 (Halogens) 18 (Noble gases)
Periods	1 2 3 4 5 6 7 8+ Aufbau Fricke Pyykkö
Blocks	Aufbau principle

Bymetallicity

Metals	Lanthanides Actinides Transition metals Post-transition metals
Metalloids	Lists of metalloids by source Dividing line
Nonmetals	Noble gases

Other sets

Elements

Lists	By:Abundance (in humans) Atomic properties Nuclear stability Symbol
Properties	Aqueous chemistry Crystal structure Electron configuration Electronegativity Goldschmidt classification Term symbol
Data pages	Abundance Atomic radius Boiling point Critical point Density Elasticity Electrical resistivity Electron affinity Electron configuration Electronegativity Hardness Heat capacity Heat of fusion Heat of vaporization Ionization energy Melting point Oxidation state Speed of sound Thermal conductivity Thermal expansion coefficient Vapor pressure

History

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Critical point

References

CRC.a-d

LNG

KAL

SMI

See also