Caprylic acid

C8H16O2CAS 124-07-2144.21 g/mol

OOH
Carboxylic acid

Properties

Molecular formula
C8H16O2
Molar mass
144.21 g/mol
Exact mass
144.1150 Da
Density
0.91 g/mL (at 20 °C)
Melting point
16.7 °C
Boiling point
239.7 °C
Critical temperature
421.1 °C (694.3 K)ChemSep
Critical pressure
27.79 barChemSep
Acentric factor
0.773ChemSep
Enthalpy of formation (gas)
−556.00 kJ/molChemSep
pKa
4.895 (25 °C)
Water solubility
< 1 g/L (17.8 °C)
logP
2.43Crippen estimate
Polar surface area
37.3 Ų
H-bond donors / acceptors
1 / 1
Rotatable bonds
6

Hazards

Danger
Corrosive (GHS05)

Harmonised EU classification (CLP Annex VI, index 607-708-00-4), via PubChem.

Precautionary statements

P260, P264, P273, P280, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P363, P405, P501

Identifiers

CAS number
124-07-2
SMILES
CCCCCCCC(=O)O
InChIKey
WWZKQHOCKIZLMA-UHFFFAOYSA-N
InChI
InChI=1S/C8H16O2/c1-2-3-4-5-6-7-8(9)10/h2-7H2,1H3,(H,9,10)
Characterization data

Calculated from the structure, in the form journals print them.

¹H NMR
Predicted ¹H NMR (400 MHz, CDCl₃) δ 11.50 (br s, 1H), 2.38 (t, J = 7.0 Hz, 2H), 1.57 (quint, J = 7.0 Hz, 2H), 1.27 (m, J = 7.0 Hz, 2H), 1.27 (m, J = 7.0 Hz, 2H), 1.27 (m, J = 7.0 Hz, 2H), 1.27 (m, J = 7.0 Hz, 2H), 0.86 (t, J = 7.0 Hz, 3H).
¹³C NMR
Predicted ¹³C NMR (101 MHz, CDCl₃) δ 180.3, 34.1, 32.5, 29.7, 29.7, 25.1, 23.1, 14.0.
[M + H]+
[M + H]+ Calcd for C8H17O2 145.1223
[M + Na]+
[M + Na]+ Calcd for C8H16NaO2 167.1043
[M − H]−
[M − H]− Calcd for C8H15O2 143.1078
Elemental analysis
Anal. Calcd for C8H16O2: C, 66.63; H, 11.18.

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Type any one amount. The others follow from the molar mass and density.

Names and synonyms

22 names · show all
  • Octanoic acid
  • n-Caprylic acid
  • neo-Fat 8
  • 1-Heptanecarboxylic acid
  • n-Octoic acid
  • Octylic acid
  • n-Octylic acid
  • n-Octanoic acid
  • Lunac 8-95
  • NAA 82
  • Prifac 2901
  • Lunac 8-98
  • neo-Fat 8S
  • Kortacid 0899
  • Emery 657
  • NSC 5024
  • Edenor C 8-98-100
  • Cg 100 (fatty acid)
  • Cg 100
  • Edenor 8-99MY
  • Edenor C 8-99MY
  • MCFA 8S

Safety data sheets

One stored sheet lists this compound in section 3, matched by the CAS number 124-07-2. Each row opens the sheet with its composition and PDF.

Work with Caprylic acid

Stereoisomers, salts and isotopologues

The same compound in another form: other stereochemistry, a salt or hydrate, the free acid or base, or an isotope-labelled version.

Similar compounds

Tanimoto similarity of circular fingerprints over the whole catalogue.

Same formula

Elsewhere