Oleic acid

Oleic acid is an organic compound with the molecular formula C18H34O2.

Formula
C18H34O2
Molar mass
282.5 g/mol
Also known as
(Z)-octadec-9-enoic acid, cis-9-Octadecenoic acid, Wecoline OO, Vopcolene 27, cis-Oleic acid, Glycon wo

Overview

Oleic acid is an organic compound with the molecular formula C18H34O2.

Identifiers

Formula
C18H34O2
Molar mass
282.5 g/mol
Also known as
(Z)-octadec-9-enoic acid, cis-9-Octadecenoic acid, Wecoline OO, Vopcolene 27, cis-Oleic acid, Glycon wo
Chemical identifiers
SMILES
CCCCCCCC/C=C\CCCCCCCC(=O)O
InChI
InChI=1S/C18H34O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h9-10H,2-8,11-17H2,1H3,(H,19,20)/b10-9-
PubChem CID
445639

Properties

Melting Point
16.3 °C
Boiling / decomposition
Boiling Point - Decomposes at 360 °C and 1 atm
Relative density (water = 1)
Relative density (water = 1): 0.89
Water solubility
Solubility in water: none

References

  1. PubChem Compound Summary: Oleic acid (CID 445639)National Center for Biotechnology Information · PubChem

    Identity, molecular formula, molecular weight and aliases retrieved via PUG REST on 2026-09-08.

  2. Hazardous Substances Data Bank (HSDB): Oleic acid — melting pointHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/445639#section=Melting-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Lide, D.R. CRC Handbook of Chemistry and Physics 86TH Edition 2005-2006. CRC Press, Taylor & Francis, Boca Raton, FL 2005, p. 3-406

  3. Hazardous Substances Data Bank (HSDB): Oleic acid — boiling pointHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/445639#section=Boiling-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Riddick, J.A., W.B. Bunger, Sakano T.K. Techniques of Chemistry 4th ed., Volume II. Organic Solvents. New York, NY: John Wiley and Sons., 1985., p. 379

  4. ILO-WHO International Chemical Safety Cards (ICSCs): Oleic acid — densityILO-WHO International Chemical Safety Cards (ICSCs)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/445639#section=Density. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred.

  5. ILO-WHO International Chemical Safety Cards (ICSCs): Oleic acid — solubilityILO-WHO International Chemical Safety Cards (ICSCs)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/445639#section=Solubility. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred.