Chemical Properties of Oxygen (CAS 7782-44-7)

Oxygen

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InChI
InChI=1S/O2/c1-2
InChI Key
MYMOFIZGZYHOMD-UHFFFAOYSA-N
Formula
O2
SMILES
O=O
Molecular Weight1
32.00
CAS
7782-44-7
Other Names
  • Dioxygen
  • Liquid oxygen
  • Molecular oxygen
  • O2
  • Oxygen molecule
  • Pure oxygen
  • UN 1072
  • UN 1073
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Physical Properties

Property Value Unit Source
ω 0.0250 KDB
PAff [421.00; 421.00] kJ/mol Show Hide
PAff 421.00 kJ/mol NIST
PAff 421.00 ± 3.00 kJ/mol NIST
BasG 396.30 kJ/mol NIST
μ 0.00 debye KDB
EA [0.15; 1.27] eV Show Hide
EA 0.45 ± 0.01 eV NIST
EA 0.45 ± 0.01 eV NIST
EA 0.44 ± 0.01 eV NIST
EA 0.45 ± 0.05 eV NIST
EA 0.44 ± 0.10 eV NIST
EA 0.40 ± 0.10 eV NIST
EA 0.45 ± 0.02 eV NIST
EA 0.50 ± 0.10 eV NIST
EA 0.43 ± 0.03 eV NIST
EA 0.46 ± 0.05 eV NIST
EA 0.45 ± 0.10 eV NIST
EA 0.50 ± 0.20 eV NIST
EA 0.43 ± 0.02 eV NIST
EA 0.48 eV NIST
EA 0.56 ± 0.10 eV NIST
EA 0.73 eV NIST
EA Outlier 1.27 ± 0.20 eV NIST
EA Outlier 1.12 ± 0.07 eV NIST
EA 1.10 ± 0.10 eV NIST
EA 0.15 ± 0.05 eV NIST
Δf -447.78 kJ/mol Joback Calculated Property
Rg 0.6040 KDB
Δfgas -426.93 kJ/mol Joback Calculated Property
Δfus 6.37 kJ/mol Joback Calculated Property
Δvap 27.12 kJ/mol Joback Calculated Property
IE [12.00; 12.80] eV Show Hide
IE 12.07 ± 0.00 eV NIST
IE 12.07 ± 0.00 eV NIST
IE 12.10 ± 0.10 eV NIST
IE Outlier 12.80 ± 0.50 eV NIST
IE 12.00 ± 1.00 eV NIST
IE 12.08 ± 0.00 eV NIST
IE 12.07 eV NIST
IE 12.07 ± 0.00 eV NIST
IE 12.00 ± 0.50 eV NIST
IE 12.20 ± 0.20 eV NIST
IE 12.07 ± 0.01 eV NIST
IE 12.08 eV NIST
IE 12.08 eV NIST
IE 12.13 eV NIST
IE 12.07 ± 0.01 eV NIST
IE 12.06 ± 0.00 eV NIST
IE 12.08 ± 0.01 eV NIST
IE 12.06 ± 0.00 eV NIST
IE 12.08 ± 0.01 eV NIST
IE 12.30 eV NIST
IE 12.33 ± 0.01 eV NIST
log10WS -0.95 Crippen Calculated Property
logPoct/wat 0.067 Crippen Calculated Property
McVol 18.300 ml/mol McGowan Calculated Property
Pc [4985.19; 5043.00] kPa Show Hide
Pc 5043.00 kPa KDB
Pc 5043.00 ± 0.50 kPa NIST
Pc 5003.43 ± 30.39 kPa NIST
Pc 4992.28 ± 30.39 kPa NIST
Pc 4985.19 ± 30.39 kPa NIST
Ptriple 0.15 kPa KDB
ρc 435.18 ± 0.45 kg/m3 NIST
gas,1 bar 205.15 ± 0.01 J/mol×K NIST
Tboil [90.20; 90.20] K Show Hide
Tboil 90.20 K KDB
Tboil 90.20 ± 0.20 K NIST
Tc [154.58; 155.15] K Show Hide
Tc 154.59 K KDB
Tc 154.58 ± 0.00 K NIST
Tc 154.58 ± 0.00 K NIST
Tc 155.15 ± 0.30 K NIST
Tfus [54.36; 54.80] K Show Hide
Tfus 54.36 K KDB
Tfus 54.80 ± 0.20 K NIST
Ttriple [54.33; 54.36] K Show Hide
Ttriple 54.36 K KDB
Ttriple 54.33 ± 0.06 K NIST
Vc 0.073 m3/kmol KDB
Zc 0.2864140 KDB
Zra 0.29 KDB

Temperature Dependent Properties

Property Value Unit Temperature (K) Source
Cp,gas [9.31; 21.37] J/mol×K [177.00; 289.79] Show Hide
Cp,gas 9.31 J/mol×K 177.00 Joback Calculated Property
Cp,gas 11.77 J/mol×K 195.80 Joback Calculated Property
Cp,gas 14.04 J/mol×K 214.60 Joback Calculated Property
Cp,gas 16.12 J/mol×K 233.40 Joback Calculated Property
Cp,gas 18.04 J/mol×K 252.20 Joback Calculated Property
Cp,gas 19.78 J/mol×K 270.99 Joback Calculated Property
Cp,gas 21.37 J/mol×K 289.79 Joback Calculated Property
η [0.0021038; 0.0114021] Pa×s [126.66; 177.00] Show Hide
η 0.0114021 Pa×s 126.66 Joback Calculated Property
η 0.0078823 Pa×s 135.05 Joback Calculated Property
η 0.0056896 Pa×s 143.44 Joback Calculated Property
η 0.0042575 Pa×s 151.83 Joback Calculated Property
η 0.0032841 Pa×s 160.22 Joback Calculated Property
η 0.0025996 Pa×s 168.61 Joback Calculated Property
η 0.0021038 Pa×s 177.00 Joback Calculated Property
ΔvapH 9.26 kJ/mol 30.50 Measure...
ρl 1149.00 kg/m3 90.00 KDB
γ [0.00; 0.02] N/m [80.00; 132.00] Show Hide
γ 0.02 N/m 80.00 The liq...
γ 0.01 N/m 90.00 The liq...
γ 0.01 N/m 100.00 The liq...
γ 0.01 N/m 115.00 The liq...
γ 0.01 N/m 120.00 The liq...
γ 0.01 N/m 124.00 The liq...
γ 0.00 N/m 128.00 The liq...
γ 0.00 N/m 132.00 The liq...

Datasets

Speed of sound, m/s

Operational condition: Frequency, MHz = 8 (Fluid (supercritical or subcritical phases))

Fixed Measured
Temperature, K - Fluid (supercritical or subcritical phases) Pressure, kPa - Fluid (supercritical or subcritical phases) Speed of sound, m/s - Fluid (supercritical or subcritical phases)
499.03 4920.00 434.71
399.09 4960.00 388.03
499.03 5910.00 436.52
449.94 6010.00 414.33
399.09 6020.00 389.77
499.03 7820.00 440.23
399.09 7950.00 393.26
449.95 8010.00 418.16
349.98 8030.00 367.01
299.97 9920.00 340.22
449.94 9970.00 422.01
399.11 9980.00 397.34
498.94 10000.00 444.64
349.99 10070.00 370.9
299.96 14860.00 352.65
499.02 14940.00 455.31
349.99 14980.00 382.53
449.94 15000.00 433.26
399.10 15010.00 408.72
349.99 19640.00 396.03
399.06 19900.00 421.58
449.94 20010.00 445.6
299.97 20050.00 370.99
499.04 20070.00 467.39
499.01 24900.00 479.52
449.94 24940.00 458.85
349.99 24980.00 414.2
399.09 25010.00 436.72
299.97 25030.00 392.82
399.09 29900.00 452.47
499.00 29910.00 492.81
299.97 29960.00 417.33
349.98 29990.00 433.29
449.94 30000.00 473.4
499.00 34730.00 506.11
399.08 34890.00 469.6
299.97 34960.00 443.87
449.93 35030.00 488.6
349.99 35080.00 454.09
299.97 39960.00 471.2
399.08 39970.00 487.82
498.99 40010.00 521.13
449.93 40050.00 504.35
350.03 40050.00 475.39
499.00 44900.00 535.41
399.08 44980.00 506.29
349.99 45020.00 497.15
299.97 45030.00 498.92
449.94 45090.00 520.58
349.98 49900.00 518.73
449.94 49910.00 536.52
499.03 49930.00 550.29
299.97 50010.00 525.82
399.09 50090.00 525.43
499.03 54810.00 564.89
399.08 54970.00 543.88
449.90 55090.00 553.54
349.99 55110.00 541.66
299.97 55140.00 552.86
349.99 59910.00 562.59
498.89 60010.00 580.54
449.90 60070.00 570.12
399.08 60070.00 563.14
299.97 60160.00 578.47
399.08 64900.00 581.28
350.03 64930.00 584.11
299.97 64960.00 602.28
498.89 65000.00 595.63
449.89 65180.00 587.16
349.99 68690.00 600.07
299.97 69690.00 624.95
498.83 69940.00 610.55
399.08 70100.00 600.65
449.89 70120.00 603.58
300.00 74030.00 645.07
399.07 74590.00 617.2
498.91 74960.00 625.69
449.88 75270.00 620.61
349.98 78850.00 641.85
399.07 79990.00 636.78
498.92 79990.00 640.74
449.87 80010.00 636.12
399.05 83180.00 648.15
498.93 84890.00 655.27
449.88 85020.00 652.33
449.79 87520.00 660.32
449.95 88050.00 662.01
498.91 90000.00 670.28
498.90 95000.00 684.96
498.91 100060.00 699.53
Reference

Correlations

Property Value Unit Temperature (K) Source
Pvap [0.15; 5041.09] kPa [54.35; 154.58] The Yaw... Show Hide
Equationln(Pvp) = A + B/(T + C)
Coefficient A1.37279e+01
Coefficient B-7.81059e+02
Coefficient C-4.45000e+00
Temperature range, min.54.35
Temperature range, max.154.58
Pvap 0.15 kPa 54.35 Calculated Property
Pvap 2.54 kPa 65.49 Calculated Property
Pvap 18.28 kPa 76.62 Calculated Property
Pvap 77.68 kPa 87.76 Calculated Property
Pvap 234.65 kPa 98.90 Calculated Property
Pvap 561.36 kPa 110.03 Calculated Property
Pvap 1137.05 kPa 121.17 Calculated Property
Pvap 2036.66 kPa 132.31 Calculated Property
Pvap 3322.69 kPa 143.44 Calculated Property
Pvap 5041.09 kPa 154.58 Calculated Property

Similar Compounds

Oxygen cation. ozone. Dimethyl sulfide. Methane-d3,(methylthio). C(CH3)2. Methyldichlorophosphine. Propane, 2,2-difluoro-. 2-Butyne, 1,1,1,4,4,4-hexafluoro-. But-2-yn-1-yl radical. 2-Butyne. Aluminum chloride fluoride. Propane, 2-fluoro-2-methyl-. Cyanopropyne. Aluminum chloride fluoride. Propane, 2-iodo-.

Find more compounds similar to Oxygen.

Mixtures

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Sources

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Outlier This icon means that the value is more than 2 standard deviations away from the property mean.