Isopentenyl Alcohol CAS 556-82-1 Permethrin Insecticide Raw Material Pesticide Chemical Intermediate
Model Number : HMHT0076
Other Names : 3-methyl-2-buten-1-o; 3-Methyl-2-butenol; 3-Methyl-2-butenyl alcohol; 3-methyl-but-2-en-1-ol; 3-methylbut-2-en-1-ol;dimethylallylalcohol; gamma, gamma-Dimethylallyl alcohol; gamma, gamma-dimethylallylalcohol
Molecular Formula : C5H10O
Molecular Weight : 86.13
CAS NO. : 556-82-1
EINECS NO. : 209-141-4
FEMA 3647 | 3-METHYL-2-BUTEN-1-OL
Physical and chemical properties
This product is a colorless transparent liquid with a strong ester fragrance, b.p. 140℃ (52～56℃/2.67kpa), n20D 1.4160, relative density 0.8240, insoluble in water, soluble in organic solvents such as alcohol and ether.
25kg/ drum or as per customers ' requirements .
At present, the synthesis process of isopentenol mainly includes: ①The two-step synthesis process of Prins reaction condensation and isomerization using isobutylene and formaldehyde as raw materials. This reaction is carried out under ultra-high temperature and ultra-high pressure conditions. An unfriendly process in terms of safety and energy consumption; ②The esterification of isoprene carboxylate is prepared by esterification of isoprene and carboxylic acid and then hydrolyzed. This process has a mild reaction, but produces a large amount of waste Environmentally unfriendly process; ③Prenyl aldehyde hydrogenation method, this method is mainly Chemicalbook limited by the source of raw materials, which is difficult to large-scale industrial production; ④Acetone and acetylene are used as raw materials to undergo acetylation, hydrogenation and isomerization. · This process has mild reaction conditions and simple operation is the mainstream process for the production of isopentenol, but due to the many steps, the production cost is high; ⑤ isoprene is a direct hydration process as a raw material, and the product of this process has two isoprene alcohols. Enol and 2-methyl-3-buten-2-ol, 2-methyl-3-buten-2-ol can be converted to isopentenol by isomerization.
Prenol, namely 3-methyl-2-butene-1-ol (3-methyl-2-butene-1-ol), is a colorless and transparent liquid, water-soluble 170g/L, miscible in alcohol , Ether and many other organic solvents. It is mainly used to synthesize important precursors of products such as vitamin E, vitamin A, perfume products citral, high-efficiency and low-toxicity pesticides, pyrethroid insecticides and other products. Isopentenol is mainly used to synthesize high-efficiency and low-toxicity pesticide pyrethroid insecticide intermediates, methyl bentinate, and its downstream products dipermethrinate, DV chrysanthemumyl chloride (dipermethrinyl chloride), etc., along with With the continuous research and maturity of the synthesis process of prenol, and the deepening of application development, the scope of application of its Chemicalbook in pesticides will continue to expand, and the market demand will also rise sharply. Isopentenol is a raw material for the synthesis of pyrethroid, an important precursor of methyl bentine acid. Usually prenol and trimethyl orthoacetate are used in the presence of an acidic catalyst. Carry out condensation Claisen rearrangement to generate methyl bentineate. Another use of isopentenol is the main intermediate for the production of TPEG, a raw material for polycarboxylic acid water-reducing agent. Isopentenol is an important raw material for the production of polycarboxylate cement water-reducing agent. The use of this high-performance cement water-reducing agent in concrete production and construction can reduce water consumption by more than 30%, increase the strength of concrete by more than 30%, and reduce the amount of cement correspondingly.
Wuxi High Mountain Hi-tech Development Co., Ltd is a professional industrial company engaged in special chemical production, technology research & development, and import & export. The company focuses on the production, trade, and research & development of various chemical products .
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