- InChI
- InChI=1S/C25H52/c1-3-5-7-9-11-13-15-17-19-21-23-25-24-22-20-18-16-14-12-10-8-6-4-2/h3-25H2,1-2H3
- InChI Key
- YKNWIILGEFFOPE-UHFFFAOYSA-N
- Formula
- C25H52
- SMILES
- CCCCCCCCCCCCCCCCCCCCCCCCC
- Molecular Weight1
- 352.68
- CAS
- 629-99-2
- Other Names
-
- n-Pentacosane
- 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).
- η : Dynamic viscosity (Pa×s).
- ΔfG° : Standard Gibbs free energy of formation (kJ/mol).
- ΔfH°gas : 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).
- ΔvapH° : Enthalpy of vaporization at standard conditions (kJ/mol).
- ΔvapH : Enthalpy of vaporization at a given temperature (kJ/mol).
- 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).
- Pvap : Vapor pressure (kPa).
- Inp : Non-polar retention indices.
- ΔfusS : Entropy of fusion at a given temperature (J/mol×K).
- S°solid,1 bar : Solid phase molar entropy at standard conditions (J/mol×K).
- Tboil : Normal Boiling Point Temperature (K).
- Tc : Critical Temperature (K).
- Tfus : Normal melting (fusion) point (K).
- Vc : Critical Volume (m3/kmol).
- 1: Molecular weight from the IUPAC atomic weights tables.
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Physical Properties
| Property | Value | Unit | Source |
|---|---|---|---|
| ΔfG° | 159.62 | kJ/mol | Joback Calculated Property |
| ΔfH°gas | -559.33 | kJ/mol | Joback Calculated Property |
| ΔfusH° | 55.53 | kJ/mol | Solid l... |
| ΔsubH° | 174.00 ± 10.00 | kJ/mol | NIST |
| ΔvapH° | [126.80; 129.80] | kJ/mol |
|
| ΔvapH° | 126.80 | kJ/mol | NIST |
| ΔvapH° | 128.60 ± 2.20 | kJ/mol | NIST |
| ΔvapH° | 127.60 ± 0.80 | kJ/mol | NIST |
| ΔvapH° | 129.80 ± 2.90 | kJ/mol | NIST |
| log10WS | -10.29 | Crippen Calculated Property | |
| logPoct/wat | 9.998 | Crippen Calculated Property | |
| McVol | 363.110 | ml/mol | McGowan Calculated Property |
| Pc | 763.95 | kPa | Joback Calculated Property |
| Inp | [394.59; 402.21] |
|
|
| Inp | 394.59 | NIST | |
| Inp | 402.21 | NIST | |
| S°solid,1 bar | 671.10 | J/mol×K | NIST |
| Tboil | 675.10 | K | NIST |
| Tc | 944.85 | K | Joback Calculated Property |
| Tfus | [325.50; 328.90] | K |
|
| Tfus | 326.65 | K | KDB |
| Tfus | 327.20 ± 0.40 | K | NIST |
| Tfus | 326.00 ± 0.10 | K | NIST |
| Tfus | 326.70 ± 0.30 | K | NIST |
| Tfus | 326.15 ± 2.00 | K | NIST |
| Tfus | 327.65 ± 2.00 | K | NIST |
| Tfus | 326.50 ± 0.60 | K | NIST |
| Tfus | 326.15 ± 3.00 | K | NIST |
| Tfus | 326.60 ± 0.20 | K | NIST |
| Tfus | 326.50 ± 0.60 | K | NIST |
| Tfus | 326.50 ± 0.50 | K | NIST |
| Tfus | 325.50 ± 3.00 | K | NIST |
| Tfus | 325.50 ± 2.00 | K | NIST |
| Tfus | 326.90 ± 2.00 | K | NIST |
| Tfus | Outlier 328.90 ± 1.00 | K | NIST |
| Tfus | 327.10 ± 1.00 | K | NIST |
| Tfus | 327.00 ± 3.00 | K | NIST |
| Vc | 1.435 | m3/kmol | Joback Calculated Property |
Temperature Dependent Properties
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Cp,gas | [1151.50; 1276.43] | J/mol×K | [771.40; 944.85] |
|
| Cp,gas | 1151.50 | J/mol×K | 771.40 | Joback Calculated Property |
| Cp,gas | 1174.90 | J/mol×K | 800.31 | Joback Calculated Property |
| Cp,gas | 1197.21 | J/mol×K | 829.22 | Joback Calculated Property |
| Cp,gas | 1218.47 | J/mol×K | 858.13 | Joback Calculated Property |
| Cp,gas | 1238.74 | J/mol×K | 887.04 | Joback Calculated Property |
| Cp,gas | 1258.04 | J/mol×K | 915.95 | Joback Calculated Property |
| Cp,gas | 1276.43 | J/mol×K | 944.85 | Joback Calculated Property |
| Cp,liquid | 815.90 | J/mol×K | 333.00 | NIST |
| Cp,solid | 769.00 | J/mol×K | 294.50 | NIST |
| η | [0.0000503; 0.0020715] | Pa×s | [371.51; 771.40] |
|
| η | 0.0020715 | Pa×s | 371.51 | Joback Calculated Property |
| η | 0.0006958 | Pa×s | 438.16 | Joback Calculated Property |
| η | 0.0003118 | Pa×s | 504.81 | Joback Calculated Property |
| η | 0.0001685 | Pa×s | 571.45 | Joback Calculated Property |
| η | 0.0001035 | Pa×s | 638.10 | Joback Calculated Property |
| η | 0.0000697 | Pa×s | 704.75 | Joback Calculated Property |
| η | 0.0000503 | Pa×s | 771.40 | Joback Calculated Property |
| ΔfusH | [26.07; 79.39] | kJ/mol | [320.20; 326.70] |
|
| ΔfusH | 26.07 | kJ/mol | 320.20 | NIST |
| ΔfusH | 55.53 | kJ/mol | 325.90 | NIST |
| ΔfusH | 57.80 | kJ/mol | 326.40 | NIST |
| ΔfusH | 79.39 | kJ/mol | 326.60 | NIST |
| ΔfusH | 57.74 | kJ/mol | 326.70 | NIST |
| ΔfusH | 57.74 | kJ/mol | 326.70 | NIST |
| ΔvapH | [90.90; 126.80] | kJ/mol | [298.00; 566.00] |
|
| ΔvapH | 119.10 | kJ/mol | 298.00 | A Compa... |
| ΔvapH | 126.80 | kJ/mol | 298.15 | Vapor P... |
| ΔvapH | 126.00 ± 1.00 | kJ/mol | 415.50 | NIST |
| ΔvapH | 106.60 | kJ/mol | 422.00 | NIST |
| ΔvapH | 97.60 | kJ/mol | 460.50 | NIST |
| ΔvapH | 90.90 ± 5.70 | kJ/mol | 479.50 | NIST |
| ΔvapH | 99.20 | kJ/mol | 566.00 | NIST |
| Pvap | [3.31e-04; 0.09] | kPa | [381.69; 461.98] |
|
| Pvap | 3.31e-04 | kPa | 381.69 | Experim... |
| Pvap | 7.83e-04 | kPa | 391.91 | Experim... |
| Pvap | 1.78e-03 | kPa | 402.03 | Experim... |
| Pvap | 3.83e-03 | kPa | 411.75 | Experim... |
| Pvap | 3.83e-03 | kPa | 411.78 | Experim... |
| Pvap | 8.02e-03 | kPa | 422.02 | Experim... |
| Pvap | 0.02 | kPa | 432.21 | Experim... |
| Pvap | 0.03 | kPa | 442.33 | Experim... |
| Pvap | 0.03 | kPa | 442.34 | Experim... |
| Pvap | 0.05 | kPa | 452.24 | Experim... |
| Pvap | 0.05 | kPa | 452.25 | Experim... |
| Pvap | 0.09 | kPa | 461.95 | Experim... |
| Pvap | 0.09 | kPa | 461.98 | Experim... |
| Pvap | 0.09 | kPa | 461.98 | Experim... |
| ΔfusS | [81.42; 243.10] | J/mol×K | [320.20; 326.70] |
|
| ΔfusS | 81.42 | J/mol×K | 320.20 | NIST |
| ΔfusS | 243.10 | J/mol×K | 326.60 | NIST |
| ΔfusS | 176.76 | J/mol×K | 326.70 | NIST |
Correlations
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Pvap | [2.09e-05; 42.74] | kPa | [355.15; 675.15] |
KDB Vap...
|
| Equation | ln(Pvp) = A + B/T + C*ln(T) + D*T^2 | |||
| Coefficient A | 5.22396e+02 | |||
| Coefficient B | -3.82614e+04 | |||
| Coefficient C | -7.31253e+01 | |||
| Coefficient D | 3.16722e-05 | |||
| Temperature range, min. | 355.15 | |||
| Temperature range, max. | 675.15 | |||
| Pvap | 2.09e-05 | kPa | 355.15 | Calculated Property |
| Pvap | 8.19e-04 | kPa | 390.71 | Calculated Property |
| Pvap | 0.01 | kPa | 426.26 | Calculated Property |
| Pvap | 0.10 | kPa | 461.82 | Calculated Property |
| Pvap | 0.47 | kPa | 497.37 | Calculated Property |
| Pvap | 1.63 | kPa | 532.93 | Calculated Property |
| Pvap | 4.46 | kPa | 568.48 | Calculated Property |
| Pvap | 10.39 | kPa | 604.04 | Calculated Property |
| Pvap | 21.77 | kPa | 639.59 | Calculated Property |
| Pvap | 42.74 | kPa | 675.15 | Calculated Property |
Similar Compounds
Find more compounds similar to Pentacosane.
Mixtures
Sources
- KDB Vapor Pressure Data
- Crippen Method
- Crippen Method
- Solid liquid equilibria and purity determination for binary n-alkane + naphthalene systems
- A Comparison of Results by Correlation Gas Chromatography with Another Gas Chromatographic Retention Time Technique. The Effects of Retention Time Coincidence on Vaporization Enthalpy and Vapor Pressure
- Vapor Pressures and Vaporization Enthalpies of the n-Alkanes from C21 to C30 at T = 298.15 K by Correlation Gas Chromatography
- Experimental Vapor Pressures of Six n-Alkanes (C21, C23, C25, C27, C29, C30) in the Temperature Range between 350 K and 460 K
- Joback Method
- KDB
- McGowan Method
- NIST Webbook
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