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Linoleic acid

CAS No.: 60-33-31
Molecular Weight: 261.72 g/mol
Chemical Formula C18H32O2

Linoleic acid is a polyunsaturated omega-6 fatty acid and is one of two essential fatty acids for humans, who must obtain it through their diet. It is a colorless or white oil that is virtually insoluble in water. Linoleic Acid is a fatty acid that has been observed to influence the inflammatory process and regulate the functions of neutrophils.

General Properties and Specifications of Linoleic acid or 9-cis12-cis-Linoleic acid or cis-9-cis12-Octadecadienoic acid or Telfairic acid:
Appearance: Clear colorless liquid.
Assay: 98% minimum.
Melting point: -5C literature.
Relative density: around 0.9
Solubility: Soluble in ethanol. It is often supplied as a solution in ethanol.
Storage: -20C.


Specifications of Linoleic Acid FCC Food Grade:
(Z),(Z)-9,12-Octadecadienoic Acid
CH3(CH2)4CH CHCH2CH CH(CH2)7COOH
C18H32O2 --- Formula weight 280.45
CAS: [60-33-3]

DESCRIPTION
Linoleic Acid occurs as a colorless to pale yellow, oily liquid that is easily oxidized by air. It is an essential fatty acid and the major constituent of many vegetable oils, including cottonseed, soybean, peanut, corn, sunflower seed, safflower, poppy seed, and linseed. Its specific gravity is about 0.901, and its refractive index is about 1.469. It has a boiling point ranging from 225C to 230C and a melting point around −5C. One milliliter dissolves in 10 mL of petroleum ether. It is freely soluble in ether; soluble in absolute alcohol and in chloroform; and miscible with dimethylformamide, fat solvents, and oils. It is insoluble in water.
Function: Flavoring adjuvant; nutrient.

REQUIREMENTS
Identification: Linoleic Acid exhibits the following composition profile of fatty acids determined as directed under Fatty Acid Composition, Appendix VII.
Fatty Acid & Weight % (Range): 14:0 is <1.0; 16:0 is 3 to 5; 18:0 is <1.0; 18:1 is <25.0; 18:2 is >60.0; 18:3is <9.0
Assay: Not less than 60.0% of fatty acid C18:2, equivalent to C18H32O2, calculated on the anhydrous basis.
Acid Value: Between 196 and 202.
Iodine Value: Between 145 and 160.
Lead: Not more than 2 mg/kg.
Residue on Ignition: Not more than 0.01%.
Unsaponifiable Matter: Not more than 2.0%.
Water: Not more than 0.5%.