55701-05-8
Permethric acid
CAS: 55701-05-8
Molecular Formula: C8H10Cl2O2
55701-05-8 - Names and Identifiers
55701-05-8 - Physico-chemical Properties
| Molecular Formula | C8H10Cl2O2 |
| Molar Mass | 209.07 |
| Density | 1.433±0.06 g/cm3(Predicted) |
| Melting Point | 58.33 °C |
| Boling Point | 92-94.5 °C |
| Appearance | Shape Solid, color White to Pale Yellow |
| pKa | 4.09±0.33(Predicted) |
| Storage Condition | 2-8°C |
| Physical and Chemical Properties | Chemical properties The pure dichlorochrysanthemum acid is white crystal,(±) cis-trans dichlorochrysanthemum acid m.p.65 ~ 70 ℃, insoluble in water, soluble in ethanol, acetone, ether, toluene and other organic solvents. |
| Use | Dichlorochrysanthemum acid, or DV chrysanthemum acid, is an important intermediate of pyrethroids. It can be used to make many pyrethroid insecticides for sanitary or agricultural use, such as permethrin, cypermethrin, cis-cypermethrin, beta-cypermethrin, pentene cypermethrin (permethrin), valenthrin, dichloropententhrin, chlorpyrethrin, pentafluthrin, tetrafluorthrin, Cypermethrin (permethrin), cyfluthrin. |
55701-05-8 - Upstream Downstream Industry
55701-05-8 - Nature
| Solubility | Chloroform (Slightly), DMSO (Slightly), Methanol (Slightly) |
| EPA chemical information | 3-(2,2-Dichlorovinyl)-2,2-dimethylcyclopropanecarboxylic acid (55701-05-8) |
Last Update：2024-04-09 01:59:50
55701-05-8 - Production method
Dichlorochrysanthemum acid is generally prepared by hydrolysis and acidification of methyl (B) dichlorochrysanthemum acid in an alkaline aqueous solution of ethanol.
Methyl dichlorochrysanthemum acid, lye and ethanol are respectively pumped into the reaction kettle, heated and refluxed for 2h under stirring, distilled to recover ethanol and methanol under normal pressure, added water to dissolve sodium dichlorochrysanthemum acid salt after slightly cooling, added toluene and hydrochloric acid at normal temperature for acidification, pH of acidification layer = 1~2, stirred for 0.5h, let stand to separate the water layer and oil layer, put it into a storage tank, and then extract the water layer twice with toluene, merge the oil layer, heat azeotropic dehydration to obtain dichlorochrysanthemum acid toluene solution, steam to remove toluene to obtain dichlorochrysanthemum acid.
Last Update：2024-04-09 19:04:56
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Product Name: permethrinic acid；Permethric acid Request for quotationCAS: 55701-05-8
Tel: +86 19849939632
Email: 2470479589@qq.com
Mobile: +86 19849939632
QQ: 2470479589
Wechat: +86 19849939632
Product Name: 3-(2,2-Dichloroethenyl)-2,2-dimethylcyclopropanecarboxylic Acid (cis/trans mixture) Visit Supplier Webpage Request for quotation
CAS: 55701-05-8
Tel: 18301782025
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Mobile: 18021002903
QQ: 3008007409
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CAS: 55701-05-8
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View History
Downstream Products for 55701-05-8
Cyfluthrin
(1R-cis)-3-(2,2-dibromoethenyl)-2,2-dimethylcyclopropane carboxylic acid
Cypermethrin
Esfenvalerate
3-(2,2-Dichlorovinyl)-2,2-dimethylcyclopropanecarbonyl chloride
(1R,3S)-3-(2,2-dichloroethenyl)-2,2-dimethyl-cyclopropane-1-carboxylic acid
1R-cis,trans-chrysanthemic acid
(1R-cis)-3-(2,2-dibromoethenyl)-2,2-dimethylcyclopropane carboxylic acid
Cypermethrin
Esfenvalerate
3-(2,2-Dichlorovinyl)-2,2-dimethylcyclopropanecarbonyl chloride
(1R,3S)-3-(2,2-dichloroethenyl)-2,2-dimethyl-cyclopropane-1-carboxylic acid
1R-cis,trans-chrysanthemic acid