Industrial oils volatility

Ashraf, M., R. Ahmad, S. Mahood, and M. K. Bhatty. Studies of the essential oils of the Pakistani species of the family Umbelliferae. XLV. Ferula assa-foetida, Linn (Herra Hing) gum oil. Pak J Sci Ind Res 1980 23 68-69. Ashraf, M., R. Ahmad, S. Mahood, and M. K. Bhatty. Studies of the essential oils of the Pakistani species of the family Umbelliferae. Part XXXV. Ferula assafoetida, Linn (Hing) seed oil. Pak J Sci Ind Res 1979 22(6) 308-310. Kleiman, R., and G. E. Spencer. Search for new industrial oils 16. Umbelliflorae-seed oils rich in petroselinic acid. J Amer OU Chem Soc 1982 59 29-32. Rajanikanth, B., B. Ravindranath, and M. L. Shankaranarayana. Volatile polysulphides of asafoetida. Phytochemistry 1984 23(4) 899—900. Shankaranarayana, M. L., B. Raghavan, and C. P. Natarajan. Odorous compounds of asafetida. VII. Isolation and identification. Indian Food Pack 1982 36(5) 65-76. 

Some specific types of industrial oils can be readily segregated at source and are suitable for relatively simple reprocessing before being returned to their original service. Typical processing methods involve filtration and then removal of water or volatile decomposition products under vacuum. 

As an aside, the nomenclature of the coal tar industry, like that of the petroleum industry (Speight, 2007), needs refinement and clarification. Almost any black, undefined, semisolid-to-liquid material is popularly, and often incorrectly, described as tar or pitch whether it be a manufactured product or a naturally occurring substance (Chapter 16). However, to be correct and to avoid any ambiguity, use of these terms should be applied with caution. The term tar is usually applied to the volatile and nonvolatile soluble products that are produced during the carbonization or destructive distillation (thermal decomposition with the simultaneous removal of distillate) of various organic materials. By way of further definition, distillation of the tar yields an oil (volatile organic products often referred to as benzole) and a nonvolatile pitch. In addition, the origin of the... 

Essential oils n. Volatile oils or essences derived from vegetation and characterized by distinctive odors and a substantial measure of resistance to hydrolysis. Chemically, essential oils are often principally terpenes. Some essential oils are nearly pure single compounds. Some contain resins in solution and are then called oleoresins or balsams. Shahidi F, Bailey AE (eds) (2005) Bailey s industrial oil and fat products. John Wiley and Sons, New York. Langenheim JH (2003) Plant resins chemistry, evolution ecology and ethnobotany. Timber Press, Portland, OR. Paint pigment, drying oils, polymers, resins, naval stores, cellulosics... 

The market value of natural gas Hquids is highly volatile and historically has been weakly related to the world price of cmde oil. During the 1980s, the market value of natural gas Hquids ranged from approximately 60% of the price of cmde to 73% (12). In this 10-year interval, several fluctuations occurred in the natural gas Hquid market. Because of the variabiHty of the natural gas Hquid market, the NGL recovery plants need to have flexibiHty. Natural gas Hquid products compete in the following markets ethane propane a Hquefted petroleum gas (LPG) a C-3/C-4 mix and / -butane all compete as petrochemical feedstocks. Propane and LPG are also used as industrial and domestic fuels, whereas 2-butane and natural gasoline, consisting of C-5 and heavier hydrocarbons, are used as refinery feedstocks. 

Rose. Of all the natural oils, rose is probably the most desired material used in the fine fragrance industry. For years chemists have tried to unravel the mystery of the odor-donating components of this high priced natural material. Simple glc analysis shows that nine components constitute nearly 89% of the total volatiles of rose otto (9) (see Table 2). 

Lavender Oil Spike. Also known as spike oil, lavender oil spike is obtained by steam distillation of the flowering tops of l vandula latijolia Vik., which grows wild and is also cultivated throughout the Mediterranean region, with most production in Spain and France. There was a time when spike oil, particularly Spanish lavender oil [8016-78-2] found extensive use in soap perfumery however, with the introduction of the less expensive lavandin oil, a hybrid of tme lavender (L. angustifolid) and L. latijolia, utilization of spike oil in perfumery has been reduced appreciably. French spike oil, a more dehcate version, still finds considerable use in functional and industrial perfumery. A comparison of the volatiles of a commercial Spanish oil and a... 

Pimento Berry Oil. The pimento or allspice tree, Pimenta dioca L. (syn. P. officinalis, Liadl.), a native of the West Indies and Central America, yields two essential oils of commercial importance pimento berry oil and pimenta leaf oil. The leaf oil finds some use ia perfumery for its resemblance to clove leaf and cinnamon leaf oils as a result of its high content of eugenol. Pimento berry oil is an item of commerce with extensive appHcation by the flavor industry ia food products such as meat sauces, sausages, and pickles, and moderate use ia perfumery, where it is used primarily as a modifier ia the modem spicy types of men s fragrances. The oil is steam-distilled from dried, cmshed, fully grown but unripe fmits. It is a pale yellow Hquid with a warm-spicy, sweet odor with a fresh, clean topnote, a tenacious, sweet-balsamic-spicy body, and a tea-like undertone. A comparative analysis of the headspace volatiles of ripe pimento berries and a commercial oil has been performed and differences are shown ia Table 52 (95). 

The most common chromatogram in the distilled spirits industry is the fusel oil content. This consists of / -propyl alcohol, isobutyl alcohol, and isoamyl alcohol. Other common peaks are ethyl acetate, acetaldehyde, and methanol. The gc columns may be steel, copper, or glass packed column or capillary columns. Additional analyses include deterrninations of esters, total acids, fixed acids, volatile acids, soHds or extracts (used to determine... 

Essential oils are obtained from fmits and flowers (61,62). Volatile esters of short- and medium-chain carboxyHc acids or aromatic carboxyHc acids with short- and medium-chain alcohols are primary constituents of essential oils, eg, ethyl acetate in wines, brandy, and in fmits such as pineapple ben2yl acetate in jasmine and gardenia methyl saHcylate in oils of wintergreen and sweet birch. Most of these naturally occurring esters in essential oils have pleasant odors, and either they or their synthetic counterparts are used in the confectionery, beverage, perfume, cosmetic, and soap industries (see Oils, essential). 

The UK Environment Agency deals with over 6000 oil pollution incidents each year. One estimate suggests tliat tlie cheiTtical industry contributes to 50% of all ah pollution witli proportions approximating to sulphur dioxide (36%), carbon dioxide (28%), nitrogen oxides (18%), carbon monoxide (14%) and black smoke (10%). Motor spirit refining is responsible for ca 26% of emissions of volatile organic compounds to the atmosphere. In 1996 there were over 20 000 reports of water pollution incidents with 155 successful prosecutions. 

Distillation is probably Ihe most widely used separation (mass transfer) process in the chemical and allied industries. Its applications range from the rectification of alcohol, which has been practiced since antiquity, lo the fractionation of crude oil. The separation of liquid mixtures by distillation is based on differences in volatility between the components. The greater the... 

Supercritical fluid extraction (SFE) has been extensively used for the extraction of volatile components such as essential oils, flavours and aromas from plant materials on an industrial as well as an analytical scale (61). The extract thus obtained is usually analysed by GC. Off-line SFE-GC is frequently employed, but on-line SEE-GC has also been used. The direct coupling of SEE with supercritical fluid chromatography (SEC) has also been successfully caried out. Coupling SEE with SEC provides several advantages for the separation and detection of organic substances low temperatures can be used for both SEE and SEC, so they are well suited for the analysis of natural materials that contain compounds which are temperature-sensitive, such as flavours and fragrances. 

Miscellaneous Determinations. Several other problems are deserving of brief mention. The citrus industry, for example, would welcome an improved and more rapid method for determining volatile oil in citrus products. The tomato canning industry could profit by more rapid and accurate methods for determining tomato solids, and also by a method that would predict the increase in viscosity which takes place during concentration. 

Unpublished laboratory results of PMV about high temperature treatment of RCP with suitable exhaust air and duration time showed a significant reduction of the volatile mineral oil constitutions of a magnitude of up to 98%. An up-scaling of those process stages or even an industrial implementation is not yet realised because the laboratory conditions cannot be transferred in an economical way. 

Biopract provides technological products and processes for industry, agriculture, and environment. They not only produce technical enzyme preparations but also develop enzymes for applications in agriculture, food, and textile industry as well as in environmental technologies. On the later, bioremediation has been an area of service delivery from Biopract. Their activities regards microbial preparations for the bioremediation of organic contaminants (mineral oil (MKW), polycyclic aromatic hydrocarbons (PAH), benzene, toluene, ethylbenzene, xylene (BTEX), methyl-tert-butyl ether (MTBE), volatile organic hydrocarbons (VOC), and dimethyl sulfoxide (DMSO)). 

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