1834 benzene price quotes, German scientist Friedrich Michel (E · E · Mitscherlich, 1794- 1863) by distilling a mixture of benzoic acid and lime to obtain a liquid with the same liquid Faraday prepared and named benzene. Until after the correct molecular organic chemistry concepts and valence concept is established, the French chemist Day Lal (C · F · Gerhardt, 1815- 1856) and others have also determined the relative molecular mass of benzene was 78, the formula C6H6. Benzene relative carbon content is so high, so amazed how chemists to determine its structural formula yet. Chemists have embarrassed: carbon benzene, hydrogen ratio is so large, indicating that benzene is highly unsaturated compounds. However, it has not typical unsaturated compounds benzene, nature of the addition reaction should have prone. [2] benzene participate in chemical reactions generally have three kinds: one is a substitution reaction occurs between the hydrogen atom and the other group on the benzene ring; and one is on the phenyl ring occurs an addition reaction (Note: the phenyl ring Benzene carbon-carbon double bond offer, but a unique bond between a single bond and a double bond); a universal combustion (oxidation) (acidic potassium permanganate can not fade). Substitution reaction of hydrogen atoms on the benzene ring under certain conditions can be substituted by halogen, nitro, sulfonic acid group, a hydrocarbon group, etc. factory direct benzene, to form the corresponding derivatives. Because of the different substituents and different positions of the group of a hydrogen atom, a different number can be generated with different numbers and isomeric structures. High density electron cloud of the benzene ring, so the occurrence of substitution on the phenyl ring of mostly electrophilic substitution reactions. Electrophilic substitution reactions are typical reactions aromatic ring. When substituted benzene performing electrophilic substitution, the second substituent original position and kind of the substituent concerned. Liaoning benzene, benzene price quotes, Xiang dry chemical (certified merchants) by Andrew dry Jinan Chemical Limited. Jinan Cheung Dry Chemical Co. (www.xiangqianhuagong.com) (http://www.dilunyierchun.com) is specialized in the "glycol" enterprise, the company of "honesty, hard service" concept, to provide you with The most high-quality products and services. Welcome to inquire! Contact: Mr. You can also access (www.dilunyierchun.com/supply_details_38791890.html), for more information about the company.