Description
Isobornyl acetate is a kind of acetate ester. It can be manufactured through the esterification between acetate and camphene. It is a kind of flavoring agent with fragrance. It can be used as the intermediate needed for producing medical synthetic camphor.
References
Ning, Chunli, et al. "Study on the catalyst for the synthesis of isobornyl acetate." Industrial Catalysis (2012).
Opdyke, D. L. J. "Monographs on fragrance raw materials: Isobornyl acetate." Food & Cosmetics Toxicology 13.5(1975): 552-552.
Chimal-Valencia, O, et al. "Ion exchange resins as catalyst for the isomerization of alpha-pinene to camphene. " Bioresource Technology 93.2(2004): 119-123.
Description
Isobornyl acetate has a pleasant, camphor-like odor reminiscent
of some varieties of pine needles and hemlock, and a fresh, burning
taste. May be prepared by treatment of camphene with acetic acid,
usually in the presence of a catalyst; also by acetylation of
isobomeol; depending on the starting material (d-camphene or ι-camphene), the resulting acetate may exhibit a slight optical activity; the commercial product is considered to be optically inactive.
Chemical Properties
Isobornyl Acetate has
been identified in a number of essential oils. It is a colorless liquid with a pleasant, pine-needle odor. Isobornyl acetate is prepared from camphene and
acetic acid in the presence of acidic catalysts (e.g., sulfuric acid) or on a
styrene–divinylbenzene acid ion-exchanger.
Isobornyl acetate is used in large amounts for perfuming soaps, bath products,
and air fresheners. However, the major use of isobornyl acetate is as an intermediate
in the production of camphor.
Chemical Properties
Colorless liquid; pine-needle odor.Soluble in most fixed
oils and in mineral oil; insoluble in glycerol and
water. Combustible.
Chemical Properties
Isobornyl acetate has a pleasant, camphor-like odor reminiscent of some varieties of pine needles and hemlock and a
fresh, burning taste
Occurrence
Reported found in thymus, Parmesan cheese, dill herb, Ocimum basilicum, rosemary and custard apple
Uses
Isobornyl acetate is one of the most important chemicals used in the perfumery industry. It is used in toiletries and soaps as a flavoring agent and antiseptics. One of main applications is as an intermediate to produce camphor.
Uses
Compounding pine-needle odors, toilet waters,
bath preparations, antiseptics, theater sprays, soaps,
making synthetic camphor, flavoring agent.
Preparation
By treatment of camphene with acetic acid, usually in the presence of a catalyst; also by acetylation of isoborneol; depending on the starting material (d-camphene or l-camphene), the resulting acetate may exhibit slight optical activity; the commercial
product is considered to be optically inactive
Aroma threshold values
Aroma characteristics at 1.0%: camphoraceous woody,sweet, citrus and herbal with “Irish Spring” soapy nuances
Taste threshold values
Taste characteristics at 2 to 10 ppm: camphoraceous, woody, terpy and piney with a spicy, herbal and slightly
citrus nuance
