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Toluene is also found in cigarette smoke and car exhaust. If not in contact with air, toluene can remain unchanged in soil or water for a long time. [39] Toluene is a common solvent, e.g. for paints, paint thinners, silicone sealants, [40] many chemical reactants, rubber, printing ink, adhesives (glues), lacquers, leather tanners, and ...
Toluene derivatives (3 P) 2-Tolyl compounds (18 P) 3-Tolyl compounds (10 P) 4-Tolyl compounds (1 C, 25 P) Pages in category "Toluenes" The following 15 pages are in ...
In 1841, Henri Étienne Sainte-Claire Deville isolated toluene by the dry distillation of tolu balsam. [4] The resin is used in traditional medicine by the people of Central America and South America. [5] It got its name because it was shipped to Europe from Tolú, Colombia. [2]
Ethyltoluene is produced by ethylation of toluene: CH 3 C 6 H 5 + C 2 H 4 → CH 3 C 6 H 4 C 2 H 5. Over typical acid catalysts, this process gives a mixture of the 2-, 3-, and 4- isomers. Using a modified zeolite catalyst, the alkylation is shape-selective for the 4- isomer. [1] 4-Ethyltoluene is subjected dehydrogenation to give 4 ...
It is mainly used to manufacture toluene diisocyanate, which is a key raw material in polyurethane chemistry. [4] It is still the starting material used when non-phosgene methods of production of toluene diisocyanate are used. [5] [6] It is also a degradation product of polyurethane materials produced using toluene diisocyanate.
The two most common petrochemical classes are olefins (including ethylene and propylene) and aromatics (including benzene, toluene and xylene isomers). Oil refineries produce olefins and aromatics by fluid catalytic cracking of petroleum fractions. Chemical plants produce olefins by steam cracking of natural gas liquids like ethane and propane.
The chemical composition of a petroleum distillate can be modified to result in a solvent with a reduced concentration of unsaturated hydrocarbons, i.e. alkenes, by hydrotreating and/or reduced aromatics, e.g. benzene, toluene, xylene, by several dearomatization methods. [1]
Toluene (or methylbenzene) is a common chemical found in chemistry laboratories. An alkylbenzene is a chemical compound that contains a monocyclic aromatic ring attaching to one or more saturated hydrocarbon chains. [1] Alkylbenzenes are derivatives of benzene, in which one or more hydrogen atoms are replaced by alkyl groups.