Perfume odors

Amyl Acetate 628-63-7 Solvent or Flavoring agent Nail polish, polish remover, leather pohsh, shoe pohsh, perfume odorant, food Systemic effects mildly toxic skin and eye irritation flammable... 

The two major routes to 3,4-dihydro-2JT-l,5-benzodioxepins (274) from (273) and (275) are applicable to a wide range of substituted derivatives. The 3-oxo derivative, important as a perfume odorant, can be prepared via the reaction of 1,2-dihydroxybenzene with chloroacetonitrile (75CJC2279) or via a Dieckmann cyclization (74USP3799892). 

V-alkanes (No. 1) and n-carboxylic acids (No. 9) occur in all natural materials and are as well used for numerous industrial syntheses (see Table 2). Thus, their appearance in Lippe river water can be attributed to various sources. This is also the case for vanillin (see section Perfumes, odors and additives for cosmetics ). In contrast, di-zvo-propyldisulfide (No. 45) and dipropyltrisulfide (No. 46) which were detected in several water samples (see Table 1) are clearly related to natural sources. It is known that they are formed by blue-green algae (Microcystis flos-aquae) in fresh waters (Hofbauer and Juttner, 1988) and the industrial application is unknown. 

Perfumes Odorants include 2-octanol, heptanal, and undecenal... 

Products and Uses A solvent in nail lacquers, polish remover, and leather polish. A perfume odorant, and artificial fruit flavoring, as well as use in manufacturing of plastics and inks and antibiotics. 

A schematic of a glow discharge tube is shown in Figure 4.6. Ions that are formed in an atmospheric pressure glow discharge can be used as an ion source for IMS. In one case, this ion source was used to characterize perfume odors. In another study, the sensitivity toward m-xylene was enhanced compared to the Ni and CD sources, and the dynamic range was extended to three orders of magnitude. ... 

Special problems can occur in the formulation of cosmetics and toiletries or household products containing perfumes (odors may be changed or may become unstable in the new medium, the perfume may change the physical properties of the cosmetic, etc.). Therefore, the fragrance must be formulated individually for each product. 

Few flowers are more beautiful or more fragrant than roses. Their perfumed odor is due to several simple organic... 

Properties Lt. straw-colored turbid liq., faint perfumed odor fomis milky emulsion in R.T. water dens. 7.1 Ib/gal flash pt. (OC) 140 F pH 4.2 0.3 (2%)... 

Chemical compounds having odor and taste number in the thousands. In 1969 a description of the odor characteristics of more than three thousand chemical compounds used in the flavor and perfume industries were described (41). The Hst of volatile compounds found in food that may contribute to odor and taste is even larger (42), and the Hst of all possible flavor compounds, including those that have yet to be synthesized, is greater than a thousand. Many different compounds have the same flavor character or quaUty, differing perhaps in their relative intensity but indistinguishable in the type of flavor they ehcit. The exact number of different flavor quaUties is not known, but it appears to be much less than the total number of compounds with flavor. 

Other Additives. To provide and maintain the clarity of clear shampoos, the use of either ethyl or isopropyl alcohol maybe employed. Perfumes are added to make shampoos more pleasing in terms of odor, while dyes are incorporated to give visual aesthetics to the products. Salts of ethylenediaminetetraacetic acid are found to sequester and prevent formation of insoluble alkaline-earth metal salts. 

Methyl Isopropyl Ketone. Methyl isopropyl ketone [563-80-4] (3-methyl-2-butanone) is a colorless Hquid with a characteristic odor of lower ketones. It can be produced by hydrating isoprene over an acidic catalyst at 200—300°C (150,151) or by acid-catalyzed condensation of methyl ethyl ketone and formaldehyde to 2-methyl-l-buten-3-one, foUowed by hydrogenation to the product (152). Other patented preparations are known (155,156). Methyl isopropyl ketone is used as an intermediate in the production of pharmaceuticals and fragrances (see Perfumes), and as a solvent (157). It is domestically available from Eastman (Longview, Texas) (47). 

Bl cetyl. Biacetyl [431-03-8] (2,3-butanedione) is a greenish yeUow liquid with a quinone odor. Biacetyl occurs naturally in bay oil and is readily soluble in organic solvents. It is a constituent of many food aromas, eg, butter, and is commonly used to flavor margarine. Flavor-grade biacetyl was available at 20.40/kg in July 1993, and is used as an odorant for coffee, vinegar, tobacco, and in perfumes. 

Translating odor modifiers into consumer products results in forms, such as soHds, Hquids, and aerosols, for a market defined as products "for the nose." This includes products that cover up or eliminate odors, perfume the home, or cleanse the air. Such products thus defined were reported to have sales in 1992 of just under 2 biUion. The categories of this market can be broken out as traditional air fresheners, cat Utter products, aroma care, air purification, and disinfectant in both consumer and industrial appUcations. 

Pommade. These are botanical extracts prepared by the enfleurage method wherein flower petals are placed on a layer of fat which extracts the essential oil. This method is appHed to low odored flowers, which do not yield appreciable oil on steam or water distillation, or flowers of valuable but dehcate odor (such as jasmin), which are destroyed on such treatment. Pommades, as such, are seldom used by the industry at present (ca 1995), but are further processed to provide more concentrated extracts such as absolutes. Absolutes, being alcohol-soluble, are much more convenient forms for the perfumer. 

Because of its more interesting odor and flavor properties, many perfumers and flavorists prefer to use a terpeneless lime oil. A typical analysis is shown iu Table 10 (26). 

Cyanide Wastes. Ozone is employed as a selective oxidant in laboratory-scale synthesis (7) and in commercial-scale production of specialty organic chemicals and intermediates such as fragrances, perfumes (qv), flavors, antibiotics (qv), hormones (qv), and vitamins (qv). In Japan, several metric tons per day (t/d) of piperonal [120-57-0] (3,4-methylenedioxybenzaldehyde) is manufactured in 87% yield via ozonolysis and reduction of isosafrole [93-16-3], Piperonal (or heHotropine [120-57-0]) has a pleasant odor and is used in perfumery. Oleic acid [112-80-1/, CH3(CH2 )7CH—CH(CH2 ). C02H, from tall oil (qv) is ozonated on a t/d scale to produce pelargonic, GgH2yG02H, and azelaic, H02G(GH2)yG02H, acids. Oleic acid also is ozonated in Japan... 

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