Дигидротерпинилацетат

Identification

Dihydroterpinyl acetate (synonyms: terpineol dihydroacetate, dihydroterpineol acetate, menthanyl acetate; English Dihydroterpinyl acetate, CAS 58985-18-5) is an ester of acetic acid and dihydroterpineol, also known as p-menthan-8-yl acetate. Chemical formula C12H22O2. The commercial product is typically a mixture of cis and trans isomers of p-menthan-1-yl- and p-menthan-8-yl-acetate based on a menthane (bicyclic terpene) skeleton, a saturated derivative of terpineol obtained by hydrogenation of the double bond in the isopropenyl moiety.

Molecular parameters

• Molecular weight: 198.3
• Exact weight: 198.16200
• EU number: 261-543-9
• PSA specifications: 26.3
• XLogP3: 3.31360

Physico-chemical properties

• Appearance: Liquid
• Density: 0.932 g/cm3
• Boiling point: 222.2 °C at 760 mm Hg. Art.
• Flash point: 87 °C
• Refractive index: 1.448

Scope of application

An aromatic additive with a citrus-pine, fresh odor and a secondary herbaceous note characteristic of hydrogenated terpene esters. It is used in perfume compositions of lemon, lavender and other fresh styles, in fragrances for household chemicals, washing powders, fabric softeners and personal care products - soaps, shampoos, shower gels. In the formulation it works as an extender of expensive natural essential oils, adding a clean “soapy” fresh note without weighing down the composition. The saturated menthane skeleton provides high odor resistance to oxidation compared to unsaturated terpene analogues, which is valued in compositions of household chemicals with a long shelf life.

Security and storage

Hazard Statement H411 - Toxic to aquatic life with long lasting effects. Precautionary statements: P273 - Avoid release to the environment; P391 - collect spilled substance; P501 - Dispose of contents and containers in accordance with local regulations. Store in a hermetically sealed container made of glass or metal, resistant to organic solvents, in a dry, ventilated area away from heat sources, open flames and direct sunlight, away from oxidizing agents. A flash point of 87 °C classifies the substance as a moderately flammable liquid - warehouse standards require separate storage from flammable materials. When working with the concentrate, use gloves and safety glasses, avoid discharging into sewers and water bodies, in case of a spill, localize it with a sorbent and do not wash it off with water. Transportation is allowed in standard chemical containers provided the packaging is sealed; When transporting large consignments, the general requirements for the transportation of flammable liquids are observed - avoiding contact with sources of fire, reliable fixation of the container in the body, availability of fire extinguishing equipment.

Additionally

According to the nomenclature, the product belongs to esters of monoterpene alcohols - a group widely used in fragrances precisely due to the combination of low volatility (boiling above 220 ° C) with a pronounced fresh odor. Unlike native terpinyl acetate with a double bond in the ring, the hydrogenated form is less susceptible to auto-oxidation during storage of the composition, which reduces the risk of the appearance of extraneous, “rancid” notes in the finished perfumery product over time.