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C3-Benzenes
The C3-benzenes are a class of organic aromatic compounds which contain a benzene ring and three other carbon atoms. For the hydrocarbons with no further unsaturation, there are four isomers. The chemical formula for all the saturated isomers is C9H12. There are three trimethylbenzenes, three ethylmetylbenzenes, and two propylbenzene isomers. Petrol (gasoline) can contain 3-4% C3-benzenes. Image:1,2,3-trimethylbenzene 200.svg, 1,2,3-trimethylbenzene or Hemellitene Image:1,2,4-Trimethylbenzene.svg, 1,2,4-Trimethylbenzene or Pseudocumene Image:Mesitylen.svg, 1,3,5-Trimethylbenzene or Mesitylene Image:1,2-Ethylmethylbenzol Structural Formulae V.2.svg, 1,2-Ethylmethylbenzene Image:1,3-Ethylmethylbenzol Structural Formulae V.2.svg, 1,3-Ethylmethylbenzene Image:1,4-Ethylmethylbenzol Structural Formulae V.2.svg, 1,4-Ethylmethylbenzene Image:Cumol.svg, Cumene Image:Isocumene.svg, ''n''-Propylbenzene Image:Trans-Propenylbenzene.svg, ''trans''-Propenylbenzene Image:4-vinyltoluene.svg, 4 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trimethylbenzenes
The trimethylbenzenes constitute a group of substances of aromatic hydrocarbons, which structure consists of a benzene ring with three methyl groups (–CH3) as a substituent. Through their different arrangement, they form three structural isomers with the molecular formula C9H12. They also belong to the group of C3-benzenes. The best-known isomer is mesitylene Mesitylene or 1,3,5-trimethylbenzene is a derivative of benzene with three methyl substituents positioned symmetrically around the ring. The other two isomeric trimethylbenzenes are 1,2,4-trimethylbenzene (pseudocumene) and 1,2,3-trimethylbenze .... : References {{Authority control Alkylbenzenes C3-Benzenes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trimethylbenzenes
The trimethylbenzenes constitute a group of substances of aromatic hydrocarbons, which structure consists of a benzene ring with three methyl groups (–CH3) as a substituent. Through their different arrangement, they form three structural isomers with the molecular formula C9H12. They also belong to the group of C3-benzenes. The best-known isomer is mesitylene Mesitylene or 1,3,5-trimethylbenzene is a derivative of benzene with three methyl substituents positioned symmetrically around the ring. The other two isomeric trimethylbenzenes are 1,2,4-trimethylbenzene (pseudocumene) and 1,2,3-trimethylbenze .... : References {{Authority control Alkylbenzenes C3-Benzenes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C3-Benzenes
The C3-benzenes are a class of organic aromatic compounds which contain a benzene ring and three other carbon atoms. For the hydrocarbons with no further unsaturation, there are four isomers. The chemical formula for all the saturated isomers is C9H12. There are three trimethylbenzenes, three ethylmetylbenzenes, and two propylbenzene isomers. Petrol (gasoline) can contain 3-4% C3-benzenes. Image:1,2,3-trimethylbenzene 200.svg, 1,2,3-trimethylbenzene or Hemellitene Image:1,2,4-Trimethylbenzene.svg, 1,2,4-Trimethylbenzene or Pseudocumene Image:Mesitylen.svg, 1,3,5-Trimethylbenzene or Mesitylene Image:1,2-Ethylmethylbenzol Structural Formulae V.2.svg, 1,2-Ethylmethylbenzene Image:1,3-Ethylmethylbenzol Structural Formulae V.2.svg, 1,3-Ethylmethylbenzene Image:1,4-Ethylmethylbenzol Structural Formulae V.2.svg, 1,4-Ethylmethylbenzene Image:Cumol.svg, Cumene Image:Isocumene.svg, ''n''-Propylbenzene Image:Trans-Propenylbenzene.svg, ''trans''-Propenylbenzene Image:4-vinyltoluene.svg, 4 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
N-Propylbenzene
''n''-Propylbenzene is an aromatic hydrocarbon with the formula . The molecule consists of a propyl group attached to a phenyl ring. It is a colorless liquid. A more common structural isomer of this compound is cumene. ''n''-Propylbenzene is used as a nonpolar organic solvent in various industries, including printing and the dyeing of textiles and in the manufacture of methylstyrene. It can be synthesized by the reaction of the Grignard reagent derived from benzyl chloride with diethyl sulfate Diethyl sulfate (DES) is a highly toxic, combustible, and likely carcinogenic chemical compound with the formula (C2H5)2SO4. It occurs as a colorless, oily liquid with a faint peppermint odor and is corrosive to tissue and metals. Diethyl sulfate .... References {{DEFAULTSORT:Propylbenzene, n- Alkylbenzenes C3-Benzenes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
N-Propylbenzene
''n''-Propylbenzene is an aromatic hydrocarbon with the formula . The molecule consists of a propyl group attached to a phenyl ring. It is a colorless liquid. A more common structural isomer of this compound is cumene. ''n''-Propylbenzene is used as a nonpolar organic solvent in various industries, including printing and the dyeing of textiles and in the manufacture of methylstyrene. It can be synthesized by the reaction of the Grignard reagent derived from benzyl chloride with diethyl sulfate Diethyl sulfate (DES) is a highly toxic, combustible, and likely carcinogenic chemical compound with the formula (C2H5)2SO4. It occurs as a colorless, oily liquid with a faint peppermint odor and is corrosive to tissue and metals. Diethyl sulfate .... References {{DEFAULTSORT:Propylbenzene, n- Alkylbenzenes C3-Benzenes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1,4-Ethylmethylbenzene
4-Ethyltoluene is an organic compound with the formula CH3C6H4C2H5. 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. Production and use Ethyltoluene is produced by ethylation of toluene: :CH3C6H5 + C2H4 → CH3C6H4C2H5 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.Karl Griesbaum, Arno Behr, Dieter Biedenkapp, Heinz-Werner Voges, Dorothea Garbe, Christian Paetz, Gerd Collin, Dieter Mayer, Hartmut Höke "Hydrocarbons" in Ullmann's Encyclopedia of Industrial Chemistry 2002 Wiley-VCH, Weinheim. 4-Ethyltoluene is subjected dehydrogenation In chemistry, dehydrogenation is a chemical reaction that involves the removal of hydrogen, usually from an organic molecule. It is the reverse of hydrogenation. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
4-Vinyltoluene
4-Vinyltoluene is an organic compound with the formula CH3C6H4CH=CH2. It is derivative of styrene and is used as a comonomer in the production of specialized polystyrenes. It is produced by the dehydrogenation of 4-ethyltoluene. It is also sometimes used in the production of styrene-free Polyester resin Polyester resins are synthetic resins formed by the reaction of dibasic organic acids and polyhydric alcohols. Maleic anhydride is a commonly used raw material with diacid functionality in unsaturated polyester resins. Unsaturated polyester resins .... References {{Hydrocarbons Monomers Vinylbenzenes C3-Benzenes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trans-Propenylbenzene
''trans''-Propenylbenzene is an organic compound with the formula C6H5CH=CHCH3. It is one of two isomers of 1-propenylbenzene. Both isomers are colorless flammable liquids. It is formed by the isomerization of allylbenzene Phenylpropene is the organic compound with the formula C6H5CH2CH=CH2. It is a colorless liquid. The compound consists of a phenyl group attached to allyl. Phenylpropene isomerizes to trans-propenylbenzene. In plant biochemistry, the phenylpro .... References {{Hydrocarbons Alkene derivatives Aromatic hydrocarbons Hydrocarbons C3-Benzenes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cumene
Cumene (isopropylbenzene) is an organic compound that contains a benzene ring with an isopropyl substituent. It is a constituent of crude oil and refined fuels. It is a flammable colorless liquid that has a boiling point of 152 °C. Nearly all the cumene that is produced as a pure compound on an industrial scale is converted to cumene hydroperoxide, which is an intermediate in the synthesis of other industrially important chemicals, primarily phenol and acetone (known as the cumene process). Production Commercial production of cumene is by Friedel–Crafts alkylation of benzene with propylene. Cumene producers account for approximately 20% of the global demand for benzene. The original route for manufacturing of cumene was by alkylation of benzene in the liquid phase using sulfuric acid as a catalyst, but because of the complicated neutralization and recycling steps required, together with corrosion problems, this process has been largely replaced. As an alternative, sol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesitylene
Mesitylene or 1,3,5-trimethylbenzene is a derivative of benzene with three methyl substituents positioned symmetrically around the ring. The other two isomeric trimethylbenzenes are 1,2,4-trimethylbenzene (pseudocumene) and 1,2,3-trimethylbenzene (hemimellitene). All three compounds have the formula C6H3(CH3)3, which is commonly abbreviated C6H3Me3. Mesitylene is a colorless liquid with sweet aromatic odor. It is a component of coal tar, which is its traditional source. It is a precursor to diverse fine chemicals. The mesityl group (Mes) is a substituent with the formula C6H2Me3 and is found in various other compounds. Preparation Mesitylene is prepared by transalkylation of xylene over solid acid catalyst:Karl Griesbaum, Arno Behr, Dieter Biedenkapp, Heinz-Werner Voges, Dorothea Garbe, Christian Paetz, Gerd Collin, Dieter Mayer, Hartmut Höke “Hydrocarbons” in Ullmann's Encyclopedia of Industrial Chemistry 2002 Wiley-VCH, Weinheim. . :2 C6H4(CH3)2 ⇌ C6H3( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudocumene
1,2,4-Trimethylbenzene, also known as pseudocumene, is an organic compound with the chemical formula CH(CH). Classified as an aromatic hydrocarbon, it is a flammable colorless liquid with a strong odor. It is nearly insoluble in water but soluble in organic solvents. It occurs naturally in coal tar and petroleum (about 3%). It is one of the three isomers of trimethylbenzene. Production Industrially, it is isolated from the C aromatic hydrocarbon fraction during petroleum distillation. Approximately 40% of this fraction is 1,2,4-trimethylbenzene. It is also generated by methylation of toluene and xylenes and the disproportionation of xylene over aluminosilicate catalysts.Karl Griesbaum, Arno Behr, Dieter Biedenkapp, Heinz-Werner Voges, Dorothea Garbe, Christian Paetz, Gerd Collin, Dieter Mayer, Hartmut Höke "Hydrocarbons" in Ullmann's Encyclopedia of Industrial Chemistry 2002 Wiley-VCH, Weinheim. Uses Pseudocumene is a precursor to mellitic anhydride, from which high performance ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benzene Ring
Benzene is an organic chemical compound with the molecular formula C6H6. The benzene molecule is composed of six carbon atoms joined in a planar ring with one hydrogen atom attached to each. Because it contains only carbon and hydrogen atoms, benzene is classed as a hydrocarbon. Benzene is a natural constituent of petroleum and is one of the elementary petrochemicals. Due to the cyclic continuous pi bonds between the carbon atoms, benzene is classed as an aromatic hydrocarbon. Benzene is a colorless and highly flammable liquid with a sweet smell, and is partially responsible for the aroma of gasoline. It is used primarily as a precursor to the manufacture of chemicals with more complex structure, such as ethylbenzene and cumene, of which billions of kilograms are produced annually. Although benzene is a major industrial chemical, it finds limited use in consumer items because of its toxicity. History Discovery The word "''benzene''" derives from "''gum benzoin''" (benzoin resi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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