Linoleic acid

Linoleic acid is an organic compound with the molecular formula C18H32O2.

Formula
C18H32O2
Molar mass
280.4 g/mol
Also known as
(9Z,12Z)-octadeca-9,12-dienoic acid, Linolic acid, Telfairic acid, cis,cis-Linoleic acid, 9,12-Linoleic acid, Unifac 6550

Overview

Linoleic acid is an organic compound with the molecular formula C18H32O2.

Identifiers

Formula
C18H32O2
Molar mass
280.4 g/mol
Also known as
(9Z,12Z)-octadeca-9,12-dienoic acid, Linolic acid, Telfairic acid, cis,cis-Linoleic acid, 9,12-Linoleic acid, Unifac 6550
Chemical identifiers
SMILES
CCCCC/C=C\C/C=C\CCCCCCCC(=O)O
InChI
InChI=1S/C18H32O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h6-7,9-10H,2-5,8,11-17H2,1H3,(H,19,20)/b7-6-,10-9-
PubChem CID
5280450

Properties

Melting Point
-6.9 °C
Boiling Point
230 °C at 16 mm Hg; 202 °C at 1.4 mm Hg
Density
0.9022 g/cu cm at 20 °C
Water solubility
In water, 1.59 mg/L at 25 °C

References

  1. PubChem Compound Summary: Linoleic acid (CID 5280450)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): Linoleic acid — melting pointHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/5280450#section=Melting-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Haynes, W.M. (ed.). CRC Handbook of Chemistry and Physics. 94th Edition. CRC Press LLC, Boca Raton: FL 2013-2014, p. 3-338

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

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/5280450#section=Boiling-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Cambridge, UK: Royal Society of Chemistry, 2013., p. 1024

  4. Hazardous Substances Data Bank (HSDB): Linoleic acid — densityHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/5280450#section=Density. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Haynes, W.M. (ed.). CRC Handbook of Chemistry and Physics. 94th Edition. CRC Press LLC, Boca Raton: FL 2013-2014, p. 3-338

  5. Hazardous Substances Data Bank (HSDB): Linoleic acid — solubilityHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/5280450#section=Solubility. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Mabrouk AF, Dugan LR Jr; J American Oil Chemists Society 38(1): 9-13 (1961)