- InChI
- InChI=1S/C18H38/c1-3-5-7-9-11-13-15-17-18-16-14-12-10-8-6-4-2/h3-18H2,1-2H3
- InChI Key
- RZJRJXONCZWCBN-UHFFFAOYSA-N
- Formula
- C18H38
- SMILES
- CCCCCCCCCCCCCCCCCC
- Molecular Weight1
- 254.50
- CAS
- 593-45-3
- Other Names
-
- Octadecan
- n-octadecane
- ω : Acentric Factor.
- ΔcH°liquid : Standard liquid enthalpy of combustion (kJ/mol).
- ΔcH°solid : Standard solid enthalpy of combustion (kJ/mol).
- Cp,gas : Ideal gas heat capacity (J/mol×K).
- Cp,liquid : Liquid phase heat capacity (J/mol×K).
- Cp,solid : Solid phase heat capacity (J/mol×K).
- μ : Dipole Moment (debye).
- η : Dynamic viscosity (Pa×s).
- ΔfG° : Standard Gibbs free energy of formation (kJ/mol).
- ΔfH°gas : Enthalpy of formation at standard conditions (kJ/mol).
- ΔfH°liquid : Liquid phase enthalpy of formation at standard conditions (kJ/mol).
- ΔfH°solid : Solid phase enthalpy of formation at standard conditions (kJ/mol).
- ΔfusH° : Enthalpy of fusion at standard conditions (kJ/mol).
- ΔfusH : Enthalpy of fusion at a given temperature (kJ/mol).
- ΔsubH° : Enthalpy of sublimation at standard conditions (kJ/mol).
- ΔsubH : Enthalpy of sublimation at a given temperature (kJ/mol).
- ΔvapH° : Enthalpy of vaporization at standard conditions (kJ/mol).
- ΔvapH : Enthalpy of vaporization at a given temperature (kJ/mol).
- IE : Ionization energy (eV).
- log10WS : Log10 of Water solubility in mol/l.
- logPoct/wat : Octanol/Water partition coefficient.
- McVol : McGowan's characteristic volume (ml/mol).
- Pc : Critical Pressure (kPa).
- Ptriple : Triple Point Pressure (kPa).
- Pvap : Vapor pressure (kPa).
- ρc : Critical density (kg/m3).
- ρl : Liquid Density (kg/m3).
- Inp : Non-polar retention indices.
- ΔfusS : Entropy of fusion at a given temperature (J/mol×K).
- S°liquid : Liquid phase molar entropy at standard conditions (J/mol×K).
- γ : Surface Tension (N/m).
- S°solid,1 bar : Solid phase molar entropy at standard conditions (J/mol×K).
- Tboil : Normal Boiling Point Temperature (K).
- Tboil(P) : Boiling point at given pressure (K).
- Tc : Critical Temperature (K).
- λgas : Gas thermal conductivity (W/m×K).
- λliquid : Liquid thermal conductivity (W/m×K).
- Tfus : Normal melting (fusion) point (K).
- Tfus(P) : Melting point (K).
- Ttriple : Triple Point Temperature (K).
- UQi : UNIQUAC Qi Parameter.
- URi : UNIQUAC Ri Parameter.
- Vc : Critical Volume (m3/kmol).
- vspec : Specific Volume (m3/kg).
- VCOSTALD : COSTALD Characteristic Volume (m3/kmol).
- ωSRK : SRK acentric factor.
- Zc : Critical Compressibility.
- Zra : Rackett Parameter.
- 1: Molecular weight from the IUPAC atomic weights tables.
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Contents
- Physical Properties
- Temperature Dependent Properties
- Pressure Dependent Properties
- Datasets
- Correlations
- Similar Compounds
- Mixtures
- Sources
Physical Properties
| Property | Value | Unit | Source |
|---|---|---|---|
| ω | [0.7895; 0.8087] |
|
|
| ω | 0.8087 | PSRK revision IV (2005), critical constants and acentric factors of 1000 components Compiled value | |
| ω | 0.7895 | Passut and Danner (1973), critical constants and acentric factors Compiled value | |
| ω | 0.8080 | ChemSep v8.3 pure component data Compiled value | |
| ω | 0.7900 | KDB | |
| ΔcH°liquid | -12008.70 ± 2.40 | kJ/mol | NIST |
| ΔcH°solid | -11946.50 ± 4.80 | kJ/mol | NIST |
| μ | 0.00 | debye | ChemSep v8.3 pure component data Compiled value |
| ΔfG° | [99.21; 100.60] | kJ/mol |
|
| ΔfG° | 99.21 | kJ/mol | ChemSep v8.3 pure component data Compiled value |
| ΔfG° | 100.60 | kJ/mol | KDB |
| ΔfH°gas | [-414.80; -414.57] | kJ/mol |
|
| ΔfH°gas | -414.57 | kJ/mol | ChemSep v8.3 pure component data Compiled value |
| ΔfH°gas | -414.80 | kJ/mol | KDB |
| ΔfH°gas | -414.60 ± 2.70 | kJ/mol | NIST |
| ΔfH°liquid | -505.40 ± 2.70 | kJ/mol | NIST |
| ΔfH°solid | -567.40 ± 4.80 | kJ/mol | NIST |
| ΔfusH° | [59.30; 61.65] | kJ/mol |
|
| ΔfusH° | 61.65 | kJ/mol | Solid-liquid phase equilibria of (n-octadecane with myristic, and palmitic acid) binary mixtures used as phase change materials (PCMs) |
| ΔfusH° | 59.30 | kJ/mol | Silver incorporated microencapsulation of n-hexadecane and noctadecane appropriate for dynamic thermal management in textiles |
| ΔsubH° | 152.70 | kJ/mol | NIST |
| ΔvapH° | [90.60; 92.80] | kJ/mol |
|
| ΔvapH° | 90.60 ± 1.00 | kJ/mol | NIST |
| ΔvapH° | 91.30 ± 2.90 | kJ/mol | NIST |
| ΔvapH° | 91.40 ± 1.30 | kJ/mol | NIST |
| ΔvapH° | 91.80 | kJ/mol | NIST |
| ΔvapH° | 91.80 | kJ/mol | NIST |
| ΔvapH° | Outlier 92.80 | kJ/mol | NIST |
| ΔvapH° | 91.40 | kJ/mol | NIST |
| ΔvapH° | 90.80 | kJ/mol | NIST |
| IE | 9.84 | eV | Relay (1.0) Calculated Property |
| log10WS | -8.13 | Relay (1.0) Calculated Property | |
| logPoct/wat | 7.268 | Crippen Calculated Property | |
| McVol | 264.480 | ml/mol | McGowan Calculated Property |
| Pc | [1213.48; 1300.00] | kPa |
|
| Pc | 1290.00 | kPa | IUPAC Vapor-Liquid Critical Properties of Elements and Compounds, part 2 Compiled value |
| Pc | 1292.00 | kPa | PSRK revision IV (2005), critical constants and acentric factors of 1000 components Compiled value |
| Pc | Outlier 1213.48 | kPa | Passut and Danner (1973), critical constants and acentric factors Compiled value |
| Pc | 1290.00 | kPa | ChemSep v8.3 pure component data Compiled value |
| Pc | 1290.00 | kPa | KDB |
| Pc | 1300.00 ± 200.00 | kPa | NIST |
| Pc | 1292.00 ± 110.00 | kPa | NIST |
| Ptriple | 3.39e-05 | kPa | ChemSep v8.3 pure component data Compiled value |
| ρc | [203.60; 214.03] | kg/m3 |
|
| ρc | 203.60 ± 50.90 | kg/m3 | NIST |
| ρc | 214.03 ± 5.09 | kg/m3 | NIST |
| Inp | [296.84; 301.71] |
|
|
| Inp | 296.84 | NIST | |
| Inp | 301.71 | NIST | |
| S°liquid | 696.60 | J/mol×K | NIST |
| S°solid,1 bar | 480.20 | J/mol×K | NIST |
| Tboil | [581.00; 589.50] | K |
|
| Tboil | 588.30 | K | ChemSep v8.3 pure component data Compiled value |
| Tboil | 589.50 | K | KDB |
| Tboil | 589.30 | K | NIST |
| Tboil | 581.00 ± 3.00 | K | NIST |
| Tboil | 581.65 ± 2.50 | K | NIST |
| Tboil | 585.65 ± 2.00 | K | NIST |
| Tc | [745.26; 756.15] | K |
|
| Tc | 747.00 | K | IUPAC Vapor-Liquid Critical Properties of Elements and Compounds, part 2 Compiled value |
| Tc | 747.70 | K | PSRK revision IV (2005), critical constants and acentric factors of 1000 components Compiled value |
| Tc | 745.26 | K | Passut and Danner (1973), critical constants and acentric factors Compiled value |
| Tc | 747.00 | K | ChemSep v8.3 pure component data Compiled value |
| Tc | 747.00 | K | KDB |
| Tc | 747.00 ± 3.00 | K | NIST |
| Tc | 745.80 ± 3.40 | K | NIST |
| Tc | 747.70 ± 1.00 | K | NIST |
| Tc | 747.20 | K | NIST |
| Tc | Outlier 756.15 ± 0.01 | K | NIST |
| Tfus | [299.00; 302.90] | K |
|
| Tfus | 301.60 | K | Experimental measurements and thermodynamic modeling of wax disappearance temperature for the binary systems n-C14H30 + n- C16H34, n-C16H34 + n-C18H38 and n-C11H24 + n-C18H38 |
| Tfus | 301.46 | K | Vapour pressures of selected organic compounds down to 1 mPa, using mass-loss Knudsen effusion method |
| Tfus | 301.55 | K | Fabrication, thermal properties and thermal stabilities of microencapsulated n-alkane with poly(lauryl methacrylate) as shell |
| Tfus | 301.15 | K | Development of thermal enhanced n-octadecane/porous nano carbon-based materials using 3-step filtered vacuum impregnation method |
| Tfus | 301.15 | K | Jean-Claude Bradley Open Melting Point Dataset (2014, CC0) Compiled value |
| Tfus | 301.33 | K | ChemSep v8.3 pure component data Compiled value |
| Tfus | 301.30 | K | KDB |
| Tfus | 301.65 ± 0.20 | K | NIST |
| Tfus | 301.00 ± 0.10 | K | NIST |
| Tfus | 301.22 ± 0.15 | K | NIST |
| Tfus | 300.95 ± 0.50 | K | NIST |
| Tfus | 300.70 ± 0.50 | K | NIST |
| Tfus | 301.00 ± 3.00 | K | NIST |
| Tfus | 300.30 ± 0.50 | K | NIST |
| Tfus | Outlier 299.00 ± 3.00 | K | NIST |
| Tfus | 301.40 ± 0.30 | K | NIST |
| Tfus | 301.31 ± 0.02 | K | NIST |
| Tfus | 301.31 ± 0.02 | K | NIST |
| Tfus | 301.33 ± 0.01 | K | NIST |
| Tfus | 301.00 ± 2.00 | K | NIST |
| Tfus | 301.35 ± 0.15 | K | NIST |
| Tfus | 301.23 ± 0.20 | K | NIST |
| Tfus | 301.25 ± 0.20 | K | NIST |
| Tfus | 301.25 ± 0.20 | K | NIST |
| Tfus | 301.15 ± 1.50 | K | NIST |
| Tfus | 301.00 ± 0.50 | K | NIST |
| Tfus | 301.00 ± 0.50 | K | NIST |
| Tfus | 300.85 ± 0.30 | K | NIST |
| Tfus | 301.30 ± 0.60 | K | NIST |
| Tfus | 300.15 ± 1.50 | K | NIST |
| Tfus | 301.20 ± 0.60 | K | NIST |
| Tfus | 300.90 ± 0.60 | K | NIST |
| Tfus | 301.20 ± 0.30 | K | NIST |
| Tfus | 300.30 ± 0.50 | K | NIST |
| Tfus | 300.09 ± 0.50 | K | NIST |
| Tfus | Outlier 302.90 ± 1.00 | K | NIST |
| Tfus | 300.00 ± 2.00 | K | NIST |
| Tfus | 301.01 ± 0.30 | K | NIST |
| Tfus | 301.00 ± 1.50 | K | NIST |
| Tfus | 301.00 ± 2.00 | K | NIST |
| Tfus | 301.00 ± 2.00 | K | NIST |
| Tfus | 301.00 ± 2.00 | K | NIST |
| Tfus | 301.00 ± 2.00 | K | NIST |
| Tfus | 301.00 ± 3.00 | K | NIST |
| Ttriple | [300.50; 301.33] | K |
|
| Ttriple | 300.50 | K | Solubilities of Some Long-Chain n-Alkanes in Dipropyl Ether, Dibutyl Ether, 1-Chlorobutane, and 1-Chlorooctane as Functions of Temperature |
| Ttriple | 301.33 | K | ChemSep v8.3 pure component data Compiled value |
| Ttriple | 301.00 ± 0.04 | K | NIST |
| Ttriple | 301.30 ± 0.20 | K | NIST |
| Ttriple | 301.00 ± 0.04 | K | NIST |
| Ttriple | 301.30 ± 0.20 | K | NIST |
| UQi | 10.34 | ChemSep v8.3 pure component data Compiled value | |
| URi | 12.59 | ChemSep v8.3 pure component data Compiled value | |
| Vc | [1.189; 1.189] | m3/kmol |
|
| Vc | 1.189 | m3/kmol | IUPAC Vapor-Liquid Critical Properties of Elements and Compounds, part 2 Compiled value |
| Vc | 1.189 | m3/kmol | PSRK revision IV (2005), critical constants and acentric factors of 1000 components Compiled value |
| Vc | 1.189 | m3/kmol | ChemSep v8.3 pure component data Compiled value |
| Vc | 1.189 | m3/kmol | KDB |
| Vc | 1.189 | m3/kmol | NIST |
| VCOSTALD | 1.20 | m3/kmol | Hankinson and Thomson (1979), COSTALD parameters Compiled value |
| ωSRK | 0.81 | Hankinson and Thomson (1979), COSTALD parameters Compiled value | |
| Zc | [0.2469530; 0.2470000] |
|
|
| Zc | 0.2470000 | IUPAC Vapor-Liquid Critical Properties of Elements and Compounds, part 2 Compiled value | |
| Zc | 0.2470000 | ChemSep v8.3 pure component data Compiled value | |
| Zc | 0.2469530 | KDB | |
| Zra | [0.23; 0.25] |
|
|
| Zra | 0.23 | Hankinson and Thomson (1979), COSTALD parameters Compiled value | |
| Zra | 0.25 | ChemSep v8.3 pure component data Compiled value | |
| Zra | 0.23 | KDB |
Temperature Dependent Properties
Pressure Dependent Properties
Datasets
Viscosity, Pa*s
| Fixed | Measured | |
|---|---|---|
| Temperature, K - Liquid | Pressure, kPa - Liquid | Viscosity, Pa*s - Liquid |
| 325.60 | 9800.00 | 0.0026 |
| 325.60 | 16400.00 | 0.0028 |
| 325.60 | 29600.00 | 0.0032 |
| 325.60 | 37200.00 | 0.0036 |
| 325.60 | 51000.00 | 0.0042 |
| 325.60 | 60500.00 | 0.0046 |
| 325.60 | 69000.00 | 0.0050 |
| 325.60 | 70800.00 | 0.0051 |
| 428.90 | 6800.00 | 0.0007 |
| 428.90 | 21900.00 | 0.0008 |
| 428.90 | 42100.00 | 0.0010 |
| 428.90 | 63400.00 | 0.0012 |
| 428.90 | 84300.00 | 0.0014 |
| 428.90 | 104900.00 | 0.0016 |
| 428.90 | 125500.00 | 0.0019 |
| 428.90 | 147800.00 | 0.0021 |
| 428.90 | 168000.00 | 0.0024 |
| 428.90 | 188600.00 | 0.0027 |
| 428.90 | 209600.00 | 0.0029 |
| 428.90 | 230000.00 | 0.0032 |
| 428.90 | 243100.00 | 0.0034 |
| 533.90 | 9200.00 | 0.0003 |
| 533.90 | 9500.00 | 0.0003 |
| 533.90 | 15200.00 | 0.0003 |
| 533.90 | 22500.00 | 0.0004 |
| 533.90 | 44600.00 | 0.0005 |
| 533.90 | 64000.00 | 0.0006 |
| 533.90 | 85700.00 | 0.0007 |
| 533.90 | 105900.00 | 0.0008 |
| 533.90 | 126600.00 | 0.0009 |
| 533.90 | 147600.00 | 0.0010 |
| 533.90 | 147600.00 | 0.0010 |
| 533.90 | 167700.00 | 0.0011 |
| 533.90 | 188600.00 | 0.0012 |
| 533.90 | 209100.00 | 0.0013 |
| 533.90 | 229300.00 | 0.0014 |
| 533.90 | 242900.00 | 0.0015 |
| Reference | ||
Mass density, kg/m3
| Fixed | Measured | |
|---|---|---|
| Temperature, K - Liquid | Pressure, kPa - Liquid | Mass density, kg/m3 - Liquid |
| 323.65 | 7000.00 | 764.0 |
| 323.65 | 14400.00 | 769.0 |
| 323.65 | 28300.00 | 778.0 |
| 323.65 | 42200.00 | 788.0 |
| 323.65 | 55600.00 | 797.0 |
| 323.65 | 68900.00 | 800.0 |
| 422.85 | 7700.00 | 702.0 |
| 422.85 | 15100.00 | 711.0 |
| 422.85 | 29400.00 | 724.0 |
| 422.85 | 42500.00 | 732.0 |
| 422.85 | 56100.00 | 741.0 |
| 422.85 | 73200.00 | 752.0 |
| 422.85 | 84500.00 | 761.0 |
| 422.85 | 110000.00 | 774.0 |
| 422.85 | 138500.00 | 787.0 |
| 422.85 | 171700.00 | 801.0 |
| 422.85 | 206100.00 | 813.0 |
| 422.85 | 235500.00 | 823.0 |
| 422.85 | 255900.00 | 829.0 |
| 522.55 | 15300.00 | 651.0 |
| 522.55 | 29400.00 | 668.0 |
| 522.55 | 43200.00 | 681.0 |
| 522.55 | 56400.00 | 692.0 |
| 522.55 | 70800.00 | 703.0 |
| 522.55 | 84400.00 | 712.0 |
| 522.55 | 110000.00 | 727.0 |
| 522.55 | 137800.00 | 742.0 |
| 522.55 | 170400.00 | 757.0 |
| 522.55 | 205300.00 | 771.0 |
| 522.55 | 235700.00 | 782.0 |
| 522.55 | 257000.00 | 790.0 |
| Reference | ||
| Fixed | Measured | |
|---|---|---|
| Temperature, K - Liquid | Pressure, kPa - Liquid | Mass density, kg/m3 - Liquid |
| 323.00 | 8090.00 | 766.0 |
| 323.00 | 9490.00 | 767.0 |
| 323.10 | 2080.00 | 763.0 |
| 323.10 | 3570.00 | 764.0 |
| 323.10 | 5060.00 | 765.0 |
| 323.10 | 6500.00 | 766.0 |
| 347.90 | 2090.00 | 745.0 |
| 347.90 | 3520.00 | 746.0 |
| 347.90 | 5050.00 | 747.0 |
| 347.90 | 6530.00 | 749.0 |
| 347.90 | 8050.00 | 750.0 |
| 347.90 | 9470.00 | 751.0 |
| 397.20 | 3470.00 | 715.0 |
| 398.20 | 2030.00 | 713.0 |
| 398.20 | 4970.00 | 716.0 |
| 398.20 | 6480.00 | 718.0 |
| 398.20 | 9590.00 | 721.0 |
| 398.30 | 7940.00 | 719.0 |
| 447.50 | 7920.00 | 690.0 |
| 447.50 | 9510.00 | 692.0 |
| 447.60 | 1920.00 | 681.0 |
| 447.60 | 4900.00 | 686.0 |
| 447.60 | 6460.00 | 687.0 |
| 447.70 | 3450.00 | 684.0 |
| Reference | ||
Correlations
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Cp,gas | [314.00; 1103.28] | J/mol×K | [200.00; 1500.00] |
ChemSep v8.3 pure component data Compiled value
|
| Equation | Y = A + exp(B/T + C + D·T + E·T²) Y is Cp,gas in J/mol×K, T in K | |||
| Coefficient A | 2.58960e+02 | |||
| Coefficient B | -6.41430e+02 | |||
| Coefficient C | 7.22824e+00 | |||
| Coefficient D | -6.86020e-05 | |||
| Coefficient E | 1.81400e-08 | |||
| Temperature range, min. | 200.00 | |||
| Temperature range, max. | 1500.00 | |||
| Cp,gas | 314.00 | J/mol×K | 200.00 | Calculated Property |
| Cp,gas | 468.42 | J/mol×K | 344.44 | Calculated Property |
| Cp,gas | 619.29 | J/mol×K | 488.89 | Calculated Property |
| Cp,gas | 741.61 | J/mol×K | 633.33 | Calculated Property |
| Cp,gas | 837.88 | J/mol×K | 777.78 | Calculated Property |
| Cp,gas | 914.12 | J/mol×K | 922.22 | Calculated Property |
| Cp,gas | 975.45 | J/mol×K | 1066.67 | Calculated Property |
| Cp,gas | 1025.70 | J/mol×K | 1211.11 | Calculated Property |
| Cp,gas | 1067.64 | J/mol×K | 1355.56 | Calculated Property |
| Cp,gas | 1103.28 | J/mol×K | 1500.00 | Calculated Property |
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Cp,liquid | [563.49; 821.78] | J/mol×K | [300.00; 589.86] |
ChemSep v8.3 pure component data Compiled value
|
| Equation | Y = A + exp(B/T + C + D·T + E·T²) Y is Cp,liquid in J/mol×K, T in K | |||
| Coefficient A | 3.32820e+02 | |||
| Coefficient B | -1.51760e+01 | |||
| Coefficient C | 4.46124e+00 | |||
| Coefficient D | 3.90660e-03 | |||
| Coefficient E | -1.57380e-06 | |||
| Temperature range, min. | 300.00 | |||
| Temperature range, max. | 589.86 | |||
| Cp,liquid | 563.49 | J/mol×K | 300.00 | Calculated Property |
| Cp,liquid | 587.42 | J/mol×K | 332.21 | Calculated Property |
| Cp,liquid | 612.66 | J/mol×K | 364.41 | Calculated Property |
| Cp,liquid | 639.21 | J/mol×K | 396.62 | Calculated Property |
| Cp,liquid | 667.01 | J/mol×K | 428.83 | Calculated Property |
| Cp,liquid | 696.00 | J/mol×K | 461.03 | Calculated Property |
| Cp,liquid | 726.09 | J/mol×K | 493.24 | Calculated Property |
| Cp,liquid | 757.17 | J/mol×K | 525.45 | Calculated Property |
| Cp,liquid | 789.12 | J/mol×K | 557.65 | Calculated Property |
| Cp,liquid | 821.78 | J/mol×K | 589.86 | Calculated Property |
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| η | [0.0040388; 0.0001712] | Pa×s | [301.15; 613.15] |
ChemSep v8.3 pure component data Compiled value
|
| Equation | Y = exp(A + B/T + C·ln(T) + D·T^E) Y is η in Pa×s, T in K | |||
| Coefficient A | -8.39560e+01 | |||
| Coefficient B | 4.97870e+03 | |||
| Coefficient C | 1.09900e+01 | |||
| Coefficient D | -8.98340e-06 | |||
| Coefficient E | 2.00000e+00 | |||
| Temperature range, min. | 301.15 | |||
| Temperature range, max. | 613.15 | |||
| η | 0.0040388 | Pa×s | 301.15 | Calculated Property |
| η | 0.0019905 | Pa×s | 335.82 | Calculated Property |
| η | 0.0011745 | Pa×s | 370.48 | Calculated Property |
| η | 0.0007807 | Pa×s | 405.15 | Calculated Property |
| η | 0.0005616 | Pa×s | 439.82 | Calculated Property |
| η | 0.0004253 | Pa×s | 474.48 | Calculated Property |
| η | 0.0003326 | Pa×s | 509.15 | Calculated Property |
| η | 0.0002650 | Pa×s | 543.82 | Calculated Property |
| η | 0.0002129 | Pa×s | 578.48 | Calculated Property |
| η | 0.0001712 | Pa×s | 613.15 | Calculated Property |
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| ΔvapH | [89.30; 25.10] | kJ/mol | [298.15; 723.54] |
ChemSep v8.3 pure component data Compiled value
|
| Equation | Y = A·(1 − Tr)^(B + C·Tr + D·Tr² + E·Tr³), Tr = T/Tc Y is ΔvapH in kJ/mol, T in K | |||
| Coefficient A | 1.21400e+02 | |||
| Coefficient B | 3.63330e-01 | |||
| Coefficient C | 1.28300e+00 | |||
| Coefficient D | -2.05140e+00 | |||
| Coefficient E | 8.51750e-01 | |||
| Critical temperature, Tc (K) | 7.47000e+02 | |||
| Temperature range, min. | 298.15 | |||
| Temperature range, max. | 723.54 | |||
| ΔvapH | 89.30 | kJ/mol | 298.15 | Calculated Property |
| ΔvapH | 83.54 | kJ/mol | 345.42 | Calculated Property |
| ΔvapH | 77.91 | kJ/mol | 392.68 | Calculated Property |
| ΔvapH | 72.40 | kJ/mol | 439.95 | Calculated Property |
| ΔvapH | 66.93 | kJ/mol | 487.21 | Calculated Property |
| ΔvapH | 61.34 | kJ/mol | 534.48 | Calculated Property |
| ΔvapH | 55.35 | kJ/mol | 581.74 | Calculated Property |
| ΔvapH | 48.46 | kJ/mol | 629.01 | Calculated Property |
| ΔvapH | 39.57 | kJ/mol | 676.27 | Calculated Property |
| ΔvapH | 25.10 | kJ/mol | 723.54 | Calculated Property |
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Pvap | [1.33; 202.65] | kPa | [447.10; 623.80] |
The Yaws Handbook of Vapor Pressure
|
| Equation | ln(Y) = A + B/(T + C) Y is Pvap in kPa, T in K | |||
| Coefficient A | 1.50497e+01 | |||
| Coefficient B | -5.05624e+03 | |||
| Coefficient C | -1.04586e+02 | |||
| Temperature range, min. | 447.10 | |||
| Temperature range, max. | 623.80 | |||
| Pvap | 1.33 | kPa | 447.10 | Calculated Property |
| Pvap | 2.97 | kPa | 466.73 | Calculated Property |
| Pvap | 6.09 | kPa | 486.37 | Calculated Property |
| Pvap | 11.63 | kPa | 506.00 | Calculated Property |
| Pvap | 20.93 | kPa | 525.63 | Calculated Property |
| Pvap | 35.73 | kPa | 545.27 | Calculated Property |
| Pvap | 58.29 | kPa | 564.90 | Calculated Property |
| Pvap | 91.35 | kPa | 584.53 | Calculated Property |
| Pvap | 138.21 | kPa | 604.17 | Calculated Property |
| Pvap | 202.65 | kPa | 623.80 | Calculated Property |
| Pvap | [3.26e-05; 1217.90] | kPa | [301.31; 747.00] |
ChemSep v8.3 pure component data Compiled value
|
| Equation | Y = exp(A + B/T + C·ln(T) + D·T^E) Y is Pvap in kPa, T in K | |||
| Coefficient A | 1.49565e+02 | |||
| Coefficient B | -1.61203e+04 | |||
| Coefficient C | -1.87250e+01 | |||
| Coefficient D | 5.38655e-06 | |||
| Coefficient E | 2.00000e+00 | |||
| Comment | Range stopped at Tc; ChemSep gives it to 750.15 K. | |||
| Temperature range, min. | 301.31 | |||
| Temperature range, max. | 747.00 | |||
| Pvap | 3.26e-05 | kPa | 301.31 | Calculated Property |
| Pvap | 4.27e-03 | kPa | 350.83 | Calculated Property |
| Pvap | 0.13 | kPa | 400.35 | Calculated Property |
| Pvap | 1.54 | kPa | 449.87 | Calculated Property |
| Pvap | 9.80 | kPa | 499.39 | Calculated Property |
| Pvap | 40.62 | kPa | 548.92 | Calculated Property |
| Pvap | 124.35 | kPa | 598.44 | Calculated Property |
| Pvap | 306.60 | kPa | 647.96 | Calculated Property |
| Pvap | 646.64 | kPa | 697.48 | Calculated Property |
| Pvap | 1217.90 | kPa | 747.00 | Calculated Property |
| Pvap | [3.23e-05; 1171.38] | kPa | [301.33; 745.26] |
KDB Vapor Pressure Data
|
| Equation | ln(Y) = A + B/T + C·ln(T) + D·T² + E/T² Y is Pvap in kPa, T in K | |||
| Coefficient A | 1.68024e+02 | |||
| Coefficient B | -1.69988e+04 | |||
| Coefficient C | -2.14756e+01 | |||
| Coefficient D | 6.99410e-06 | |||
| Coefficient E | 0.00000e+00 | |||
| Temperature range, min. | 301.33 | |||
| Temperature range, max. | 745.26 | |||
| Pvap | 3.23e-05 | kPa | 301.33 | Calculated Property |
| Pvap | 4.36e-03 | kPa | 350.66 | Calculated Property |
| Pvap | 0.13 | kPa | 399.98 | Calculated Property |
| Pvap | 1.55 | kPa | 449.31 | Calculated Property |
| Pvap | 9.67 | kPa | 498.63 | Calculated Property |
| Pvap | 39.37 | kPa | 547.96 | Calculated Property |
| Pvap | 118.98 | kPa | 597.28 | Calculated Property |
| Pvap | 291.49 | kPa | 646.61 | Calculated Property |
| Pvap | 615.67 | kPa | 695.93 | Calculated Property |
| Pvap | 1171.38 | kPa | 745.26 | Calculated Property |
| Pvap | [1.48; 101.01] | kPa | [447.70; 590.00] |
NIST
|
| Equation | ln(Y) = A + B/(T + C) Y is Pvap in kPa, T in K | |||
| Coefficient A | 1.45802e+01 | |||
| Coefficient B | -4.76396e+03 | |||
| Coefficient C | -1.11927e+02 | |||
| Reference | Krafft, 1882 | |||
| Comment | Coefficents calculated by NIST from author's data. | |||
| Temperature range, min. | 447.70 | |||
| Temperature range, max. | 590.00 | |||
| Pvap | 1.48 | kPa | 447.70 | Calculated Property |
| Pvap | 2.80 | kPa | 463.51 | Calculated Property |
| Pvap | 5.02 | kPa | 479.32 | Calculated Property |
| Pvap | 8.57 | kPa | 495.13 | Calculated Property |
| Pvap | 14.03 | kPa | 510.94 | Calculated Property |
| Pvap | 22.11 | kPa | 526.76 | Calculated Property |
| Pvap | 33.71 | kPa | 542.57 | Calculated Property |
| Pvap | 49.87 | kPa | 558.38 | Calculated Property |
| Pvap | 71.84 | kPa | 574.19 | Calculated Property |
| Pvap | 101.01 | kPa | 590.00 | Calculated Property |
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| ρl | [791.56; 283.21] | kg/m3 | [273.15; 747.00] |
ChemSep v8.3 pure component data Compiled value
|
| Equation | Y = A / B^(1 + (1 − T/C)^D) Y is ρl in kg/m3, T in K | |||
| Coefficient A | 5.36958e+01 | |||
| Coefficient B | 2.39010e-01 | |||
| Coefficient C | 7.48160e+02 | |||
| Coefficient D | 2.81530e-01 | |||
| Comment | Range stopped at Tc; ChemSep gives it to 748.15 K. | |||
| Temperature range, min. | 273.15 | |||
| Temperature range, max. | 747.00 | |||
| ρl | 791.56 | kg/m3 | 273.15 | Calculated Property |
| ρl | 759.78 | kg/m3 | 325.80 | Calculated Property |
| ρl | 726.48 | kg/m3 | 378.45 | Calculated Property |
| ρl | 691.27 | kg/m3 | 431.10 | Calculated Property |
| ρl | 653.61 | kg/m3 | 483.75 | Calculated Property |
| ρl | 612.65 | kg/m3 | 536.40 | Calculated Property |
| ρl | 566.93 | kg/m3 | 589.05 | Calculated Property |
| ρl | 513.48 | kg/m3 | 641.70 | Calculated Property |
| ρl | 444.41 | kg/m3 | 694.35 | Calculated Property |
| ρl | 283.21 | kg/m3 | 747.00 | Calculated Property |
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| γ | [0.03; 0.00] | N/m | [301.25; 589.45] |
Jasper (1972), surface tension of pure liquid compounds Compiled value
|
| Equation | Y = A + B·T + C·T² + D·T³ + E·T⁴ Y is γ in N/m, T in K | |||
| Coefficient A | 5.30065e-02 | |||
| Coefficient B | -8.43000e-05 | |||
| Coefficient C | 0.00000e+00 | |||
| Coefficient D | 0.00000e+00 | |||
| Coefficient E | 0.00000e+00 | |||
| Temperature range, min. | 301.25 | |||
| Temperature range, max. | 589.45 | |||
| γ | 0.03 | N/m | 301.25 | Calculated Property |
| γ | 0.02 | N/m | 333.27 | Calculated Property |
| γ | 0.02 | N/m | 365.29 | Calculated Property |
| γ | 0.02 | N/m | 397.32 | Calculated Property |
| γ | 0.02 | N/m | 429.34 | Calculated Property |
| γ | 0.01 | N/m | 461.36 | Calculated Property |
| γ | 0.01 | N/m | 493.38 | Calculated Property |
| γ | 0.01 | N/m | 525.41 | Calculated Property |
| γ | 0.01 | N/m | 557.43 | Calculated Property |
| γ | 0.00 | N/m | 589.45 | Calculated Property |
| γ | [0.03; 3.03e-04] | N/m | [293.15; 723.54] |
ChemSep v8.3 pure component data Compiled value
|
| Equation | Y = A + exp(B/T + C + D·T + E·T²) Y is γ in N/m, T in K | |||
| Coefficient A | -5.65680e-03 | |||
| Coefficient B | 5.09500e+01 | |||
| Coefficient C | -3.34610e+00 | |||
| Coefficient D | 5.47210e-04 | |||
| Coefficient E | -4.28450e-06 | |||
| Temperature range, min. | 293.15 | |||
| Temperature range, max. | 723.54 | |||
| γ | 0.03 | N/m | 293.15 | Calculated Property |
| γ | 0.02 | N/m | 340.97 | Calculated Property |
| γ | 0.02 | N/m | 388.79 | Calculated Property |
| γ | 0.02 | N/m | 436.61 | Calculated Property |
| γ | 0.01 | N/m | 484.43 | Calculated Property |
| γ | 0.01 | N/m | 532.26 | Calculated Property |
| γ | 0.01 | N/m | 580.08 | Calculated Property |
| γ | 0.00 | N/m | 627.90 | Calculated Property |
| γ | 0.00 | N/m | 675.72 | Calculated Property |
| γ | 3.03e-04 | N/m | 723.54 | Calculated Property |
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| λgas | [0.01; 0.07] | W/m×K | [301.33; 1000.00] |
ChemSep v8.3 pure component data Compiled value
|
| Equation | Y = A·T^B / (1 + C/T + D/T²) Y is λgas in W/m×K, T in K | |||
| Coefficient A | -1.98990e+02 | |||
| Coefficient B | 1.10110e+00 | |||
| Coefficient C | -5.96850e+09 | |||
| Coefficient D | 5.24190e+11 | |||
| Temperature range, min. | 301.33 | |||
| Temperature range, max. | 1000.00 | |||
| λgas | 0.01 | W/m×K | 301.33 | Calculated Property |
| λgas | 0.01 | W/m×K | 378.96 | Calculated Property |
| λgas | 0.02 | W/m×K | 456.59 | Calculated Property |
| λgas | 0.02 | W/m×K | 534.22 | Calculated Property |
| λgas | 0.03 | W/m×K | 611.85 | Calculated Property |
| λgas | 0.04 | W/m×K | 689.48 | Calculated Property |
| λgas | 0.04 | W/m×K | 767.11 | Calculated Property |
| λgas | 0.05 | W/m×K | 844.74 | Calculated Property |
| λgas | 0.06 | W/m×K | 922.37 | Calculated Property |
| λgas | 0.07 | W/m×K | 1000.00 | Calculated Property |
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| λliquid | [0.15; 0.08] | W/m×K | [301.15; 589.86] |
ChemSep v8.3 pure component data Compiled value
|
| Equation | Y = A + exp(B/T + C + D·T + E·T²) Y is λliquid in W/m×K, T in K | |||
| Coefficient A | -4.66270e-02 | |||
| Coefficient B | -1.30560e+02 | |||
| Coefficient C | -6.48420e-01 | |||
| Coefficient D | -1.71820e-03 | |||
| Coefficient E | -4.69950e-07 | |||
| Temperature range, min. | 301.15 | |||
| Temperature range, max. | 589.86 | |||
| λliquid | 0.15 | W/m×K | 301.15 | Calculated Property |
| λliquid | 0.14 | W/m×K | 333.23 | Calculated Property |
| λliquid | 0.14 | W/m×K | 365.31 | Calculated Property |
| λliquid | 0.13 | W/m×K | 397.39 | Calculated Property |
| λliquid | 0.12 | W/m×K | 429.47 | Calculated Property |
| λliquid | 0.11 | W/m×K | 461.54 | Calculated Property |
| λliquid | 0.11 | W/m×K | 493.62 | Calculated Property |
| λliquid | 0.10 | W/m×K | 525.70 | Calculated Property |
| λliquid | 0.09 | W/m×K | 557.78 | Calculated Property |
| λliquid | 0.08 | W/m×K | 589.86 | Calculated Property |
Similar Compounds
Find more compounds similar to Octadecane.
Mixtures
- Pentane, 3-methyl- + Octadecane
- Butane, 2,2-dimethyl- + Octadecane
- Benzene + Octadecane
- Methane + Octadecane
- Benzonitrile + Octadecane
- Hydrogen + Octadecane
- Hexadecane + Octadecane
- Undecane + Octadecane
- Tetradecanoic acid + Octadecane
- n-Hexadecanoic acid + Octadecane
- n-Hexane + Octadecane
- Decane + Octadecane
- Carbon dioxide + Decane + Octadecane
- Carbon dioxide + Octadecane
- Ethane + Octadecane
- Methane + Decane + Octadecane
- Tetradecane + Octadecane
- Tetradecane + Cyclohexane + Octadecane
- Di-n-propyl ether + Octadecane
- n-Butyl ether + Octadecane
Find more mixtures with Octadecane.
Sources
- KDB Vapor Pressure Data
- Jean-Claude Bradley Open Melting Point Dataset (2014, CC0) ChEDL chemicals 1.5.2, from Bradley, J.-C.; Williams, A.; Lang, A. Jean-Claude Bradley Open Melting Point Dataset. Figshare, 2014 (CC0).
- Hankinson and Thomson (1979), COSTALD parameters ChEDL chemicals 1.5.2, from Hankinson, R. W.; Thomson, G. H. A New Correlation for Saturated Densities of Liquids and Their Mixtures. AIChE J. 1979, 25, 653-663.
- IUPAC Vapor-Liquid Critical Properties of Elements and Compounds, part 2 ChEDL chemicals 1.5.2, from Ambrose, D.; Tsonopoulos, C. Vapor-Liquid Critical Properties of Elements and Compounds. 2. Normal Alkanes. J. Chem. Eng. Data 1995, 40, 531-546.
- Jasper (1972), surface tension of pure liquid compounds ChEDL chemicals 1.5.2, from Jasper, J. J. The Surface Tension of Pure Liquid Compounds. J. Phys. Chem. Ref. Data 1972, 1, 841-1010 (as transcribed in Lange's Handbook).
- Passut and Danner (1973), critical constants and acentric factors ChEDL chemicals 1.5.2, from Passut, C. A.; Danner, R. P. Acentric Factor. A Valuable Correlating Parameter for the Properties of Hydrocarbons. Ind. Eng. Chem. Process Des. Dev. 1973, 12, 365-368.
- PSRK revision IV (2005), critical constants and acentric factors of 1000 components ChEDL chemicals 1.5.2, from Horstmann, S.; Jabłoniec, A.; Krafczyk, J.; Fischer, K.; Gmehling, J. PSRK Group Contribution Equation of State: Comprehensive Revision and Extension IV, Including Critical Constants and α-Function Parameters for 1000 Components. Fluid Phase Equilib. 2005, 227, 157-164.
- Cheméo Relay (1.0)
- ChemSep v8.3 pure component data Converted from ChemSep v8.3 pure component data, H. Kooijman and R. Taylor (2021, 2022), Artistic License 2.0; see how the values differ.
- Crippen Method
- Crippen Method
- High pressure (solid + liquid) equilibria of n-alkane mixtures: experimental results, correlation and prediction
- Experimental measurements and equation of state modeling of liquid densities for long-chain n-alkanes at pressures to 265 MPa and temperatures to 523 K
- Measurement and equation of state prediction of vapor-liquid equilibrium and physical properties for the system methane + n-octadecane
- Experimental results and thermodynamic investigation of carbon dioxide solubility in heavy liquid hydrocarbons and corresponding phase properties
- A modified continuous flow apparatus for gas solubility measurements at high pressure and temperature with camera system
- Experimental measurements and thermodynamic modeling of wax disappearance temperature for the binary systems n-C14H30 + n- C16H34, n-C16H34 + n-C18H38 and n-C11H24 + n-C18H38
- Influence of size and shape effects on the high-pressure solubility of n-alkanes: Experimental data, correlation and prediction
- Universal critical amplitude ratios in binary mixtures of {benzonitrile + alkane}
- Vapour pressures of selected organic compounds down to 1 mPa, using mass-loss Knudsen effusion method
- Viscosity of n-hexadecane, n-octadecane and n-eicosane at pressures up to 243 MPa and temperatures up to 534 K
- Improving a variation of the DSC technique for measuring the boiling points of pure compounds at low pressures
- Solid-liquid phase equilibria of (n-octadecane with myristic, and palmitic acid) binary mixtures used as phase change materials (PCMs)
- A simple method to determine the specific volumes of liquids and melts as a function of the temperature. Application to four n-alkanes (C16H34, C18H38, C19H40 and C21H44) under saturating vapour pressure in the 298-573K range
- Silver incorporated microencapsulation of n-hexadecane and noctadecane appropriate for dynamic thermal management in textiles
- Fabrication, thermal properties and thermal stabilities of microencapsulated n-alkane with poly(lauryl methacrylate) as shell
- Development of thermal enhanced n-octadecane/porous nano carbon-based materials using 3-step filtered vacuum impregnation method
- Intercomparative tests on viscosity measurements of phase change materials
- Excess Molar Volumes for Three and Four Component Mixtures Simulating the Binary Mixture (Cyclohexane+ Hexadecane)
- Interfacial Tension Measurement and Calculation of (Carbon Dioxide + n-Alkane) Binary Mixtures
- Solubilities of Some Long-Chain n-Alkanes in Dipropyl Ether, Dibutyl Ether, 1-Chlorobutane, and 1-Chlorooctane as Functions of Temperature
- Experimental Measurement and Equation of State Modeling of Liquid Saturated Properties (Solubility, Density, and Viscosity) of (Ethane + n- Octadecane) Binary Systems
- Solubility Measurements and Saturated Liquid Properties of Ternary Systems (Methane + Decane + Octadecane) at 295 K
- Equilibrium Properties of (Carbon Dioxide + n-Decane + n-Octadecane) Systems: Experiments and Thermodynamic Modeling
- KDB
- McGowan Method
- NIST Webbook
- The Yaws Handbook of Vapor Pressure
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