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Toluene (/ ˈ t ɒ l. j u iː n /), also known as toluol (/ ˈ t ɒ l. j u. ɒ l , - ɔː l , - oʊ l / ), is a substituted aromatic hydrocarbon [ 15 ] with the chemical formula C 6 H 5 CH 3 , often abbreviated as PhCH 3 , where Ph stands for the phenyl group.
E&P – exploration and production, another name for the upstream sector; EA – exploration asset; EAGE – European Association of Geoscientists and Engineers [11] ECA – Easington Catchment Area; ECD – equivalent circulating density; EDG/EDGE – emergency diesel generator; ECMS – electrical control and monitoring system
Widow-and-orphan stock: a stock that reliably provides a regular dividend while also yielding a slow but steady rise in market value over the long term. [13] Witching hour: the last hour of stock trading between 3 pm (when the bond market closes) and 4 pm EST (when the stock market closes), which can be characterized by higher-than-average ...
Many different solvents are suitable, including sulfolane (C 4 H 8 O 2 S), furfural (C 5 H 4 O 2), tetraethylene glycol (C 8 H 18 O 5), dimethylsulfoxide (C 2 H 6 OS), and N-methyl-2-pyrrolidone (C 5 H 9 NO). Below is a schematic flow diagram of one method, involving extractive distillation, for extraction of the BTX aromatics from a catalytic ...
Chemicals produced from toluene. toluene – methylbenzene; can be a solvent or precursor for other chemicals benzene; toluene diisocyanate (TDI) – used as co-monomers with polyether polyols to form polyurethanes or with di- or polyamines to form polyureas polyurethanes; benzoic acid – carboxybenzene caprolactam; Chemicals produced from xylenes
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
[6] [7] [8] Quizlet's blog, written mostly by Andrew in the earlier days of the company, claims it had reached 50,000 registered users in 252 days online. [9] In the following two years, Quizlet reached its 1,000,000th registered user. [10] Until 2011, Quizlet shared staff and financial resources with the Collectors Weekly website. [11]
4-Ethyltoluene is an organic compound with the formula CH 3 C 6 H 4 C 2 H 5. It is one of three isomers of ethyltoluene, the other two isomers being 3-ethyltoluene and 2-ethyltoluene. All are colorless liquids and all are used for the production of specialty polystyrenes .