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Toluene is widely used in the paint, dye, rubber, chemical, glue, printing, and pharmaceutical industries as a solvent. [38] Nail polish, paintbrush cleaners, and stain removers may contain toluene. Manufacturing of explosives (TNT) uses it as well. Toluene is also found in cigarette smoke and car exhaust.
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 ]
BHT is used as a preservative ingredient in some foods. With this usage BHT maintains freshness or prevents spoilage; it may be used to decrease the rate at which the texture, color, or flavor of food changes. [25] Some food companies have voluntarily eliminated BHT from their products or have announced that they were going to phase it out. [26]
[2] 2,5-Diaminotoluene is commonly used to produce black, drab and warm browns, and shades of blonde and gray hair dyes. [3] 2,5-Diaminotoluene is also known to be used in the production of dyes for textiles, furs, leathers, biological stains and indicators, wood stains, and pigments. Two examples of dyes produced by 2,5-diaminotoluene are Cl ...
Structures of the three isomers of tolyl group. In organic chemistry, tolyl groups are functional groups related to toluene. [1] They have the general formula CH 3 C 6 H 4 −R, the change of the relative position of the methyl and the R substituent on the aromatic ring can generate three possible structural isomers 1,2 (ortho), 1,3 (meta), and 1,4 (para).
Structure and properties ... Physical and Chemical Properties of Toluene in chemeo.com This page was last edited on 12 April 2023, at 11:55 (UTC). ...
Ethyltoluenes are prepared by alkylation of toluene with ethylene: CH 3 C 6 H 5 + CH 2 =CH 2 → CH 3 C 6 H 4 CH 2 CH 3. These alkylations are catalyzed by various Lewis acids, such as aluminium trichloride. 3- and 4-Ethyltoluenes are mainly of interest as precursors to methylstyrenes: CH 3 C 6 H 4 CH 2 CH 3 → CH 3 C 6 H 4 CH=CH 2 + H 2
TsOH is most often supplied as the monohydrate, and it may be necessary to remove the complexed water before use. Impurities can be removed by recrystallization from its concentrated aqueous solution followed by azeotropic drying with toluene. [2] TsOH finds use in organic synthesis as an "organic-soluble" strong acid. Examples of uses include: