Perfume composition

Linalool has been used to prepare a mixture of terpenes useful for enhancing the aroma or taste of foodstuffs, chewing gums, and perfume compositions. Aqueous citric acid reaction at 100°C converts the linalool (3) to a complex mixture. A few of the components include a-terpineol (34%) (9), Bois de Rose oxide (5.1%) (64), ocimene quintoxide (0.5%) (65), linalool oxide (0.3%) (66), tij -ocimenol (3.28%) (67), and many other alcohols and hydrocarbons (131). 

Flavor-Masking Deodorant. In addition to its use as a constituent of perfume compositions, vanillin is also useful as a deodorant to mask the unpleasant odor of many manufactured goods. As a masking agent for numerous types of ill-smelling mass-produced industrial products, particularly those of synthetic mbber, plastics, fiber glass, inks, etc, vanillin finds extensive use. It is often the most inexpensive material for the amount of masking effect it provides. Only traces are required for this purpose as the odor of vanillin is perceptible in dilutions of 2 x 10 mg/m of air. Cmde vanillin is acceptable for such purposes. 

The cross-dimerization reaction is very commonly employed for the manufacture of intermediates for synthetic musks, which have become an important class of perfumery chemicals. Synthetic musks have been the target of extensive research over the years due to a conservation order placed on the musk deer. Nitro musks are being steadily replaced by non-nitro polycyclic musks becau.se of technical drawbacks and health aspects of the former, which are explosive, sensitive, and virtually nonbiodegradable. Non-nitro musks, on the other hand exhibit better stability to light and alkali, and more nearly duplicate the odour of the macrocyclic musks occurring in nature. Indian musk odorants are easily soluble in alcohol and perfume compositions. They have the added advantage of non-discoloration in soap and domestic products. In view of the low price, their future in the perfume industry appears very promising. 

In this equation x, is the liquid perfume concentration, Mt the molecular weight, R the ideal gas constant, and T the absolute temperature. Equation 2 relates the liquid perfume composition, x, with the human sensory reaction of the evaporated perfume. A key factor of Equation 2 is the activity coefficient, y, because it represents the affinity of a molecule to its neighboring medium. High value of y means an increased inclination for a given substance to be released from the mixture and low value of y means a low concentration in the headspace. This means that the OV values of a particular component can change if it is diluted in different solvents or mixed with different fragrance components. 

Consider that the odor perception by human nose is correlated with the odor value, OVj, in the headspace above the liquid. If a specific OVt distribution values is wanted, the perfume composition can be determined with the help of Equation (2). This methodology can facilitate the optimization of perfume compositions, reducing in this way some trial and error time and chemical wastes. Clearly, the problem is determined by structural decisions because the perfume composition depends on the interaction of the different perfume components. 

Since fragrance materials differ in volatility, the odor of a perfume composition changes during evaporation and is divided into the top note, the middle notes or body, and the end note or dry out, which consists mainly of less volatile compounds. Odor perception also depends largely on odor intensity. Therefore, the typical note is not determined only by the most volatile compounds. 

CH3(CH2)9CH0, C11H22O, Mr 170.29, bp2Ave 1°C, df 0.8251, ng 1.4325, occurs in citrus oils. It is a colorless liquid with a flowery-waxy odor that has aspects of freshness. Undecanal is the prototype of the perfumery aldehydes and is widely used in perfume compositions for imparting an aldehydic note. ... 

Trimethyl-5,9-undecadienal is used to modify perfume compositions for soap, detergents and household products. 

CH3(CH2)5C00CH2CH = CH2, C10H18O2, Mr 170.25, bpm3kp 210 C, 0.890, nf 1.4290, has been found in, e.g., wild edible mushrooms. It is used in perfume compositions for apple-like (pineapple) notes. 

Wp 1.4470. Both methyl 2-nonynoate and methyl 2-octynoate have a triple bond and are liquids with a fatty, violet-leaf-like odor. They are used in perfume compositions. 

Uses. Because of its fine, flowery odor, hydroxydihydrocitronellal is used in large quantities in many perfume compositions for creating linden blossom and lily of the valley notes. It is also used in other blossom fragrances such as honeysuckle, lily, and cyclamen. 

C15H28O2, Mr 240.39, i P4kPa 194-196 °C, has a heavy, rosy-herbal odor and is used in oriental perfume compositions among others. 

The a- and /3-damascones are used in perfume compositions, especially rose perfumes, and in flavor compositions, to which they impart naturalness and body. 

It is used in small quantities in flavor and perfume compositions to impart naturalness and brilliance. 

It is used in perfume compositions for soaps and household products. 

Compound (3) can be used either in a pure state or as a mixture with its byproduct (4) in perfume compositions and soap perfumes. 

The mixture is used as such in large amounts as a replacement for sandalwood oil in soaps, cosmetics, and perfume compositions. 

It is useful in perfume compositions for, for example, laundry detergents. 

Cyclohexadecen-l-one can be added to perfume compositions as a substitute for the natural macrocyclic ketone musks. 

The product can be used to replace traditional materials such as sandalwood, vetivert and patchouli in perfume compositions. 

It can be used in perfume compositions for toiletries, soaps, and detergents. Trade Name. Majantol (H R). 

Uses. Cyclamenaldehyde is an important component for obtaining special blossom notes in perfume compositions, particularly the cyclamen type. Because of its fresh-flowery aspect, it is also used as the top note in many other blossom fragrances. 

Esters of other fatty acids are used to a lesser extent. In addition to benzyl esters and phenethyl esters, isomeric homologues with substituted side-chains are used in fairly large amounts in perfume compositions because of their special blossom odors. Not all have yet been found in nature. The esters are prepared from the corresponding alcohols via the customary routes. 

Ethylvanillin is used in the chocolate and confectionery industry. It gives a sweet, balsamic note to flowery and fruity perfume compositions. 

The commercial product is diluted with solvents (e.g., diethyl phthalate, isopropyl myristate, benzyl benzoate) to make it less viscous. It is alkali-stable and does not discolor in light. Therefore, it is a popular ingredient of perfume compositions for soap, detergents, and cosmetics and is used in large amounts. 

C13H18O2, Mr 206.29, does not occur in nature. It is a colorless to pale yellow liquid, 1.018-1.023, p 1.501 1.506, with a herbal-fresh odor, reminiscent of grapefruit. It is prepared by a Prins reaction of a-methylstyrene with acetaldehyde and used in perfume compositions for soap, detergents, and household products. 

Amyris oil is used in perfume compositions, mainly as a fixative [8015-65-4], [90320-49-3]. 

Carrot seed oil is used in the alcoholic beverage industry, in food flavors, and in perfume compositions. FCT 1976 (14) p.705 [8015-88-1], [84929-61-3]. 

Coriander is mainly cultivated in Eastern Europe. World-wide oil production is 50-100 t/yr. Coriander oil is no longer important as a raw material for the production of linalool and its derivatives. However, it is still used extensively in seasoning mixtures and in perfume compositions. FCT 1973 (11) 1077 [8008-52-4], [84775-50-8],... 

Guaiac wood oil is used extensively in perfume compositions for its excellent fixative properties (see also guajyl acetate, p. 71). FCT 1974 (12) p. 905 [89958-10-1 ]. 

Cistus and labdanum products come from Mediterranean countries, mainly Spain, where the Cistus shrub grows abundantly. They are used widely in perfumery, giving perfume compositions a warm, balsamic tonality with a touch of ambergris. The typical odor originates from a number of compounds which are formed by oxidative degradation of diterpenes with labdane skeleton, which are the main constituents of labdanum gum [284a, 558 565aj. The resinoids and absolutes are excellent natural fixatives. FCT 1976 (14) p.335 [8016-26-0], [89997-74-0]. 

Lie de vin oil consists mainly of the ethyl and isoamyl esters of fatty acids, formed during fermentation [603]. It is used mostly in aroma compositions only very small amounts are employed in perfume compositions. 

Opopanax oil and resinoid are used in perfume compositions with oriental characteristics, the resinoid also for its fixative properties, [8021-36-1], [100084-96-6]. 

Origanum oils are used in perfume compositions for herbal-spicy, leathery notes and in seasoning mixtures. FCT 1974 (12) p.945 [8007-11-2], [90131-59-2]. 

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