1.0 2010-04-08 22:08:53 UTC 2025-11-18 23:18:17 UTC FDB009969 Oleic acid, from tall oil fatty acids It is used as a food additive . C18H34O2 282.4614 282.255880332 (9Z)-octadec-9-enoic acid oleic acid 112-79-8 CCCCCCCC\C=C\CCCCCCCC(O)=O 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+ ZQPPMHVWECSIRJ-MDZDMXLPSA-N belongs to the class of organic compounds known as long-chain fatty acids. These are fatty acids with an aliphatic tail that contains between 13 and 21 carbon atoms. Long-chain fatty acids Organic compounds Lipids and lipid-like molecules Fatty Acyls Fatty acids and conjugates Aliphatic acyclic compounds Carbonyl compounds Carboxylic acids Hydrocarbon derivatives Monocarboxylic acids and derivatives Organic oxides Straight chain fatty acids Unsaturated fatty acids Aliphatic acyclic compound Carbonyl group Carboxylic acid Carboxylic acid derivative Hydrocarbon derivative Long-chain fatty acid Monocarboxylic acid or derivatives Organic oxide Organic oxygen compound Organooxygen compound Straight chain fatty acid Unsaturated fatty acid Monounsaturated fatty acids Unsaturated fatty acids Unsaturated fatty acids octadec-9-enoic acid logp 7.68 ALOGPS logs -6.37 ALOGPS solubility 1.21e-04 g/l ALOGPS logp 6.78 ChemAxon pka_strongest_acidic 4.99 ChemAxon iupac (9Z)-octadec-9-enoic acid ChemAxon average_mass 282.4614 ChemAxon mono_mass 282.255880332 ChemAxon smiles CCCCCCCC\C=C\CCCCCCCC(O)=O ChemAxon formula C18H34O2 ChemAxon 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+ ChemAxon inchikey ZQPPMHVWECSIRJ-MDZDMXLPSA-N ChemAxon polar_surface_area 37.3 ChemAxon refractivity 87.4 ChemAxon polarizability 37.09 ChemAxon rotatable_bond_count 15 ChemAxon acceptor_count 2 ChemAxon donor_count 1 ChemAxon physiological_charge -1 ChemAxon formal_charge 0 ChemAxon Specdb::EiMs 1978 Specdb::NmrTwoD 1206 Specdb::NmrOneD 1190 Specdb::CMs 463 Specdb::CMs 1874 Specdb::CMs 2563 Specdb::CMs 27397 Specdb::CMs 30911 Specdb::CMs 31072 Specdb::CMs 37356 Specdb::CMs 153882 Specdb::CMs 1054040 Specdb::MsMs 334 Specdb::MsMs 335 Specdb::MsMs 336 Specdb::MsMs 797 Specdb::MsMs 798 Specdb::MsMs 799 Specdb::MsMs 3612 Specdb::MsMs 3613 Specdb::MsMs 178443 Specdb::MsMs 178444 Specdb::MsMs 178445 Specdb::MsMs 180762 Specdb::MsMs 180763 Specdb::MsMs 180764 Specdb::MsMs 285572 Specdb::MsMs 285573 Specdb::MsMs 285574 Specdb::MsMs 285575 Specdb::MsMs 373995 Specdb::MsMs 373996 Specdb::MsMs 373997 Specdb::MsMs 373998 Specdb::MsMs 373999 Specdb::MsMs 438646 Specdb::MsMs 440469 HMDB0000207