- InChI
- InChI=1S/C9H18O2/c1-3-5-6-8(4-2)7-9(10)11/h8H,3-7H2,1-2H3,(H,10,11)
- InChI Key
- MCLMZMISZCYBBG-UHFFFAOYSA-N
- Formula
- C9H18O2
- SMILES
- CCCCC(CC)CC(=O)O
- Molecular Weight1
- 158.24
- CAS
- 14272-47-0
- ω : Acentric Factor.
- Cp,gas : Ideal gas 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).
- 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).
- Pvap : Vapor pressure (kPa).
- I : Polar retention indices.
- 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 |
|---|---|---|---|
| ω | 0.7264 | Relay (1.0) Calculated Property | |
| ΔfG° | -321.45 | kJ/mol | Joback Calculated Property |
| ΔfH°gas | -591.58 | kJ/mol | Relay (1.0) Calculated Property |
| ΔfusH° | 25.69 | kJ/mol | Joback Calculated Property |
| ΔvapH° | 78.46 | kJ/mol | Relay (1.0) Calculated Property |
| IE | 9.94 | eV | Relay (1.0) Calculated Property |
| log10WS | -2.66 | Relay (1.0) Calculated Property | |
| logPoct/wat | 2.678 | Crippen Calculated Property | |
| McVol | 145.110 | ml/mol | McGowan Calculated Property |
| Pc | 2537.93 | kPa | Joback Calculated Property |
| I | 2048.00 | NIST | |
| Tboil | 509.15 ± 2.00 | K | NIST |
| Tc | 696.62 | K | Relay (1.0) Calculated Property |
| Tfus | 250.13 | K | Relay (1.0) Calculated Property |
| Vc | 0.513 | m3/kmol | Relay (1.0) Calculated Property |
Temperature Dependent Properties
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Cp,gas | [358.12; 427.63] | J/mol×K | [550.59; 737.12] | 
|
| Cp,gas | 358.12 | J/mol×K | 550.59 | Joback Calculated Property |
| Cp,gas | 371.21 | J/mol×K | 581.68 | Joback Calculated Property |
| Cp,gas | 383.67 | J/mol×K | 612.77 | Joback Calculated Property |
| Cp,gas | 395.52 | J/mol×K | 643.85 | Joback Calculated Property |
| Cp,gas | 406.78 | J/mol×K | 674.94 | Joback Calculated Property |
| Cp,gas | 417.48 | J/mol×K | 706.03 | Joback Calculated Property |
| Cp,gas | 427.63 | J/mol×K | 737.12 | Joback Calculated Property |
| η | [0.0002263; 0.0021799] | Pa×s | [336.79; 550.59] |
|
| η | 0.0021799 | Pa×s | 336.79 | Joback Calculated Property |
| η | 0.0012475 | Pa×s | 372.42 | Joback Calculated Property |
| η | 0.0007870 | Pa×s | 408.06 | Joback Calculated Property |
| η | 0.0005346 | Pa×s | 443.69 | Joback Calculated Property |
| η | 0.0003847 | Pa×s | 479.32 | Joback Calculated Property |
| η | 0.0002897 | Pa×s | 514.96 | Joback Calculated Property |
| η | 0.0002263 | Pa×s | 550.59 | Joback Calculated Property |
Correlations
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Pvap | [1.33; 202.65] | kPa | [395.72; 549.25] |
The Yaws Handbook of Vapor Pressure
|
| Equation | ln(Pvp) = A + B/(T + C) | |||
| Coefficient A | 1.54818e+01 | |||
| Coefficient B | -4.72238e+03 | |||
| Coefficient C | -8.49180e+01 | |||
| Temperature range, min. | 395.72 | |||
| Temperature range, max. | 549.25 | |||
| Pvap | 1.33 | kPa | 395.72 | Calculated Property |
| Pvap | 2.94 | kPa | 412.78 | Calculated Property |
| Pvap | 5.99 | kPa | 429.84 | Calculated Property |
| Pvap | 11.42 | kPa | 446.90 | Calculated Property |
| Pvap | 20.55 | kPa | 463.96 | Calculated Property |
| Pvap | 35.14 | kPa | 481.01 | Calculated Property |
| Pvap | 57.50 | kPa | 498.07 | Calculated Property |
| Pvap | 90.46 | kPa | 515.13 | Calculated Property |
| Pvap | 137.50 | kPa | 532.19 | Calculated Property |
| Pvap | 202.65 | kPa | 549.25 | Calculated Property |
Similar Compounds
Find more compounds similar to 3-Ethylheptanoic acid.
Sources
- Cheméo Relay (1.0)
- Crippen Method
- Crippen Method
- Joback Method
- McGowan Method
- NIST Webbook
- The Yaws Handbook of Vapor Pressure
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