Linolelaidic acid is an omega-6 trans fatty acid (TFA) and is a cis–trans isomer of linoleic acid. It is found in partially hydrogenated vegetable oils. It is a white (or colourless) viscous liquid.

Quick Facts Names, Identifiers ...

Linolelaidic acid^[1][2]

Names
IUPAC name (9E,12E)-Octadeca-9,12-dienoic acid
Other names trans,trans-9,12-Octadecadienoic acid, Linoelaidic acid
Identifiers
CAS Number	506-21-8 Y
3D model (JSmol)	Interactive image
ChEMBL	ChEMBL93204 Y
ChemSpider	4445609 Y
PubChem CID	5282457
UNII	7552P0K6PN Y
CompTox Dashboard (EPA)	DTXSID50897508
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+ Y Key: OYHQOLUKZRVURQ-AVQMFFATSA-N Y InChI=1/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+ Key: OYHQOLUKZRVURQ-AVQMFFATBA
SMILES O=C(O)CCCCCCC/C=C/C/C=C/CCCCC
Properties
Chemical formula	C18H32O2
Molar mass	280.45 g/mol
Melting point	28–29 °C (82–84 °F; 301–302 K)[3]
Boiling point	229 to 230 °C (444 to 446 °F; 502 to 503 K) at 16 mmHg
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

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TFAs are classified as conjugated and nonconjugated, corresponding usually to the structural elements −CH=CH−CH=CH− and −CH=CH−CH₂−CH=CH−, respectively. Nonconjugated TFAs are represented by elaidic acid and linolelaidic acid. Their presence is linked heart diseases. The TFA vaccenic acid, which is of animal origin, poses less of a health risk.^[4]