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Molecule
2-Ethylhexanoic Acid
CAS: 149-57-5 · C8H16O2
2D Structure
3D Structure
Loading 3D structure...
Basic Information
- CAS Registry Number
- 149-57-5
- Molecular Formula
- C8H16O2
- Molecular Mass
- 144.21 g/mol
Identifiers
CAS Registry Number
149-57-5
SMILES
CCCCC(CC)C(=O)O
InChI Key
OBETXYAYXDNJHR-UHFFFAOYSA-N
InChI
InChI=1S/C8H16O2/c1-3-5-6-7(4-2)8(9)10/h7H,3-6H2,1-2H3,(H,9,10)
Names and Synonyms
- 2-Ethylhexanoic Acid Systematic Name
- Hexanoic acid, 2-ethyl- Synonym
- Caproic acid, α-ethyl- Synonym
- 2-Ethylhexanoic acid Synonym
- Butylethylacetic acid Synonym
- α-Ethylcaproic acid Synonym
- 2-Ethylhexoic acid Synonym
- 3-Heptanecarboxylic acid Synonym
- 2-Ethylcaproic acid Synonym
- Ethylhexanoic acid Synonym
- α-Ethylhexanoic acid Synonym
- 2-Butylbutanoic acid Synonym
- 2-Ethyl-1-hexanoic acid Synonym
- (±)-2-Ethylhexanoic acid Synonym
- NSC 8881 Synonym
- Octylic acid Synonym
All Properties
Comprehensive physical and chemical properties
| Property | Value | Source |
|---|---|---|
| Molecular Mass | 144.21 g/mol | CAS Common Chemistry |
| 144.214 g/mol | RDKit | |
| Density | 0.90 g/cm³ | CAS Common Chemistry |
| 0.9031 g/cm3 @ 25 °C | CAS Common Chemistry | |
| Wikipedia Url | https://en.wikipedia.org/wiki/2-Ethylhexanoic_acid | CAS Common Chemistry |
| Boiling Point | 228 °C | CAS Common Chemistry |
| Canonical SMILES | O=C(O)C(CC)CCCC | CAS Common Chemistry |
| InChI | InChI=1S/C8H16O2/c1-3-5-6-7(4-2)8(9)10/h7H,3-6H2,1-2H3,(H,9,10) | CAS Common Chemistry |
| InChI Key | InChIKey=OBETXYAYXDNJHR-UHFFFAOYSA-N | CAS Common Chemistry |
| Melting Point | -59 °C | CAS Common Chemistry |
| Name | 2-Ethylhexanoic acid | CAS Common Chemistry |
| Heavy Atom Count | 10 | RDKit |
| Hydrogen Bond Acceptors | 1 | RDKit |
| Hydrogen Bond Donors | 1 | RDKit |
| Rotatable Bonds | 5 | RDKit |
| Aromatic Ring Count | 0 | RDKit |
| Topological Polar Surface Area | 37.3 Ų | RDKit |
| LogP | 2.2874 | RDKit |
| 2.49 | chempirical lib | |
| Molar Refractivity | 40.9418 cm³/mol | RDKit |
| Ring Count | 0 | RDKit |
| Formal Charge | 0 | RDKit |
| Fraction Csp3 | 0.875 | RDKit |
| 0.88 | chempirical lib | |
| Exact Mass | 144.115029752 g/mol | RDKit |
Spectral Data
NMR, IR, and Mass spectral data
Predicting NMR spectra...
10 ppm
9
8
7
6
5
4
3
2
1
0 ppm
| Shift (ppm) | Multiplicity | Integration | Assignment |
|---|
200 ppm
180
160
140
120
100
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60
40
20
0 ppm
| Shift (ppm) | DEPT | Assignment |
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Note: These NMR spectra are predicted computationally and may differ from experimental data. Predictions are based on chemical environment analysis.
External Resources
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Quick conversion
MW = 144.21 g/mol; density = 0.900 g/mL. Edit any field — others recompute live.
Related
Related molecules
Other compounds with formula C8H16O2.
