Ethyl Nicotinate

DescriptionEthyl nicotinate is a chemical attractant used to prevent and control plant pests. Ethyl nicotinate was found to be a potent attractant forThrips obscuratus in peaches and apricots. It is more attractive than ripe fruit and catches peak at harvest. Long season trapping demonstrated the efficiency of chemical traps compared to unbaited traps. The attractiveness of the chemical was maintained for at least 2 weeks when 50 μl of the chemical was placed in an open 2 ml vial cap. Various pyralids, geometrids (Lepidoptera), and chironomids (Diptera) were also attracted in low numbers to ethyl nicotinate[1].

UsesEthyl nicotinate is used for skin-conditioning cosmetics. It is principally used in medicine as a local vasodilator at a concentration of 1 to 2 % in creams, ointments and pomades. It is utilized for the treatment sprains, wrenches, muscular pains and tendonitis.

UsesEthyl nicotinate is a nicotinic acid derivative used for skin-conditioning cosmetics.

PreparationNicotinic acid, anhydrous ethanol, and a solid acid catalyst for esterification are added to toluene. The mixture is stirred at 50–65°C for 3–6 hours, then heated and refluxed to separate water. Once no water is discharged, the reaction is complete. The mixture is cooled to room temperature, filtered, and the solid acid catalyst for esterification is recovered. Toluene is recovered from the filtrate under reduced pressure. The resulting light yellow transparent liquid is ethyl nicotinate. The molar ratio of nicotinic acid to anhydrous ethanol is 1:1–1:2, the weight ratio of nicotinic acid to toluene is 1:0.3–1:8, and the amount of solid acid catalyst added is 0.01–0.1 times the weight of nicotinic acid. The solid acid catalyst for esterification is HND230 solid catalyst.