Aromatic hydrocarbons referred to as "aromatic", generally refers to hydrocarbon molecules containing a benzene ring structure. Is a closed chain class. The basic structure of the benzene ring with a supply of propylene glycol monomethyl ether, the history of the early detection of these compounds more aromatic flavor, so called for these aromatic hydrocarbons, aromatic hydrocarbons having no taste later found also are unified to use this call method. Such as benzene, xylene, naphthalene and the like. Benzene homologues of the general formula CnH2n-6 (n≥6). Aromatic π electrons is 4n + 2 (n is an integer). [1] The halogenation of organic compounds of molecular hydrogen by halogen (-X) substitution reactions known halogenation reaction. Benzene under catalysis of a Lewis acid such as ferric chloride, aluminum chloride and the halogenation reaction can be generated on the benzene ring chlorobenzene or bromobenzene with chlorine or bromine occurs. Iron is reacted with chlorine or bromine, or can generate ferric iron tribromide glycol methyl ether, and therefore may be used in place of ferric chloride, iron powder, iron tribromide as catalyst. When the reaction, first with benzene formed π complex halogen, and X-ray diffraction spectra have proved the existence of π complexes. In forming π complexes, chlorine molecules bond no different crack, and then missing the role of Lewis acid electronic sales of propylene glycol monomethyl ether, propylene glycol monomethyl ether polarization chlorine molecules bond offer, then place heterolytic bond formation activity intermediate carbocation, then lose hydrogen generating chlorobenzene. Methoxypropylacetate price | Tianjin methoxypropylacetate | Xiang Xiang dry chemical provided by the Jinan Chemical Co. dry. Jinan Cheung Dry Chemical Co. (www.xiangqianhuagong.com) (www.dilunyierchun.com) strong, credible, in Jinan, Shandong alcohol industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Xiang dry chemical into the brilliant and you work for a better future! You can also access (www.dilunyierchun.com/supply_details_45566745.html), for more information about the company.