- InChI
- InChI=1S/C18H37NO/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h2-17H2,1H3,(H2,19,20)
- InChI Key
- LYRFLYHAGKPMFH-UHFFFAOYSA-N
- Formula
- C18H37NO
- SMILES
- CCCCCCCCCCCCCCCCCC(N)=O
- Molecular Weight1
- 283.49
- CAS
- 124-26-5
- Other Names
-
- Adogen 42
- Advawax 290
- Amide T
- Armid 18
- Crodamide S
- Crodamide SR
- Kemamide S
- NSC 66462
- Petrac vyn-eze
- Stearic amide
- Stearoylamide
- Stearoylamine
- Stearylamide
- Uniwax 1750
- octadecamide
- octadecylamide
- stearamide
- stearic acid amide
- ω : Acentric Factor.
- Cp,gas : Ideal gas heat capacity (J/mol×K).
- 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 a given temperature (kJ/mol).
- ΔvapH° : Enthalpy of vaporization at standard conditions (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).
- Inp : Non-polar retention indices.
- Tboil : Normal Boiling Point Temperature (K).
- Tboilr : Boiling point at reduced pressure (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 |
|---|---|---|---|
| ω | 1.0087 | Relay (1.0) Calculated Property | |
| ΔfG° | 38.21 | kJ/mol | Joback Calculated Property |
| ΔfH°gas | -625.67 | kJ/mol | Relay (1.0) Calculated Property |
| ΔfusH° | 54.80 | kJ/mol | Heat Capacities and Enthalpies of Solid-Solid Transitions and Fusion of a Series of Eleven Primary Alkylamides by Differential Scanning Calorimetry |
| ΔvapH° | 109.96 | kJ/mol | Relay (1.0) Calculated Property |
| IE | 9.83 | eV | Relay (1.0) Calculated Property |
| log10WS | -6.49 | Relay (1.0) Calculated Property | |
| logPoct/wat | 5.733 | Crippen Calculated Property | |
| McVol | 276.030 | ml/mol | McGowan Calculated Property |
| Pc | 1252.15 | kPa | Joback Calculated Property |
| Inp | [2332.00; 2398.00] |
|
|
| Inp | 2332.00 | NIST | |
| Inp | 2398.00 | NIST | |
| Inp | 2349.00 | NIST | |
| Inp | 2349.00 | NIST | |
| Inp | 2398.00 | NIST | |
| Tboil | 599.37 | K | Relay (1.0) Calculated Property |
| Tc | 806.23 | K | Relay (1.0) Calculated Property |
| Tfus | [379.10; 382.20] | K |
|
| Tfus | 379.10 ± 0.20 | K | NIST |
| Tfus | 382.05 ± 0.30 | K | NIST |
| Tfus | 382.20 ± 0.60 | K | NIST |
| Vc | 1.087 | m3/kmol | Relay (1.0) Calculated Property |
Temperature Dependent Properties
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| ΔfusH | [54.80; 59.91] | kJ/mol | [377.20; 379.70] |
|
| ΔfusH | 59.91 | kJ/mol | 377.20 | NIST |
| ΔfusH | 59.91 | kJ/mol | 377.20 | NIST |
| ΔfusH | 54.80 | kJ/mol | 379.70 | NIST |
| ΔsubH | 195.80 ± 4.20 | kJ/mol | 373.00 | NIST |
Pressure Dependent Properties
| Property | Value | Unit | Pressure (kPa) | Source |
|---|---|---|---|---|
| Tboilr | 523.70 | K | 1.60 | NIST |
Correlations
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Cp,gas | [408.63; 972.96] | J/mol×K | [273.00; 1000.00] |
Joback Predicted correlation
|
| Equation | Y = A + B·T + C·T² + D·T³ + E·T⁴ Y is Cp,gas in J/mol×K, T in K | |||
| Coefficient A | 3.76000e-01 | |||
| Coefficient B | 1.74772e+00 | |||
| Coefficient C | -9.80100e-04 | |||
| Coefficient D | 2.04960e-07 | |||
| Coefficient E | 0.00000e+00 | |||
| Temperature range, min. | 273.00 | |||
| Temperature range, max. | 1000.00 | |||
| Cp,gas | 408.63 | J/mol×K | 273.00 | Calculated Property |
| Cp,gas | 505.09 | J/mol×K | 353.78 | Calculated Property |
| Cp,gas | 591.60 | J/mol×K | 434.56 | Calculated Property |
| Cp,gas | 668.80 | J/mol×K | 515.33 | Calculated Property |
| Cp,gas | 737.35 | J/mol×K | 596.11 | Calculated Property |
| Cp,gas | 797.89 | J/mol×K | 676.89 | Calculated Property |
| Cp,gas | 851.08 | J/mol×K | 757.67 | Calculated Property |
| Cp,gas | 897.55 | J/mol×K | 838.44 | Calculated Property |
| Cp,gas | 937.96 | J/mol×K | 919.22 | Calculated Property |
| Cp,gas | 972.96 | J/mol×K | 1000.00 | Calculated Property |
Similar Compounds
Find more compounds similar to Octadecanamide.
Sources
- Cheméo Relay (1.0)
- Crippen Method
- Crippen Method
- Heat Capacities and Enthalpies of Solid-Solid Transitions and Fusion of a Series of Eleven Primary Alkylamides by Differential Scanning Calorimetry
- Joback Method
- McGowan Method
- NIST Webbook
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