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Empenthrin

Empenthrin Structure
Empenthrin
  • CAS No.54406-48-3
  • Chemical Name:Empenthrin
  • CBNumber:CB0160557
  • Molecular Formula:C18H26O2
  • Formula Weight:274.4
  • MOL File:54406-48-3.mol
Empenthrin Property
  • Melting point 25°C
  • Boiling point 377.38°C (rough estimate)
  • Density 0.9965 (rough estimate)
  • vapor pressure 1.4×10-2 Pa (23.6 °C)
  • refractive index 1.5510 (estimate)
  • storage temp. 2-8°C
  • Water Solubility 0.11 mg l-1 (25 °C)
  • Stability Stable. Incompatible with strong oxidizing agents.
  • CAS DataBase Reference 54406-48-3(CAS DataBase Reference)
  • FDA UNII K45WEG8WYL
Safety
  • Hazard Codes  :Xn;N,N,Xn
  • Risk Statements  :22-51/53
  • Safety Statements  :61
  • RIDADR  :UN 3082
  • RTECS  :GZ1728000
  • HS Code  :29162090
Hazard and Precautionary Statements (GHS)
  • Symbol(GHS)
  • Signal wordWarning
  • Hazard statements H302-H411
  • Precautionary statements P264-P270-P301+P312-P330-P501

Empenthrin Chemical Properties,Usage,Production

  • Description Empenthrin, also known as vaporthrin, (2E)-1-ethynyl-2-methyl-2-penten-1-yl 2,2- dimethyl-3-(2-methyl-1-propen-1-yl) cyclopropanecarboxylate, is a derivative of 1-ethynyl- 2-methyl penten-2-ol. The vapor pressure of empenthrin at room temperature is suitable and therefore it has a natural volatility. At 30 °C, the vapor pressures of empenthrin and allethrin are 1.62?×?10?3 and 1.20?×?10?4 mmHg, respectively. Thus, the vapor pressure of empenthrin is about 10 times more than that of allethrin. Moreover, empenthrin is odorless. It has strong killing activity and repellent effect on pests and is very suitable for textile mothproofing.
  • Chemical Properties Empenthrin is a light yellow and oily liquid with a boiling point of 346°C and a flash point of 144°C. Its density is 0.999 g.cm–3 at 20°C. The refractive index of empenthrin is 1.5270 at 20°C. It has low acute mammalian toxicity (its oral LD50 is >5,000 mg.kg–1 in male rats, >3,500 mg.kg–1 in female rats and >3,500 mg.kg–1 in mice). It is, however, very toxic to fish and other aquatic organisms.
  • Uses Empenthrin is an insecticidal pyrethroid compound.
  • Uses Empenthrin is used as a domestic insecticide, especially against moths and other insects which attack fabrics.
  • Definition ChEBI: Empenthrin is a monoterpenoid.
  • Preparation About 3.72 g (0.03 mol) of 2-methyl-1-ethynyl-2-pentenol and 3.16 g (0.04 mol) of pyridine were added to toluene to form a solution. A toluene solution containing 5.6 g (0.03 mol) of Chrysanthemoyl chloride was added in a dropwise manner. The reaction was carried out at a temperature of 40–50°C for 6h. After reaction, the reaction solution was washed with water until neutral, dried and then subjected to distillation under reduced pressure. About 5.7 g of empenthrin was collected from a fraction of 120–126°C (0.03 mmHg). The yield of empenthrin was 69%.
  • Metabolic pathway Empenthrin is a low molecular weight ester of (1R)-chrysanthemic acid (2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylic acid). It has a relatively high vapour pressure and, unlike most pyrethroids, it is effective against flying insects. The molecule has three chiral centres and geometric isomerism in the alcohol group but, with the exception of the 1R acid, the full isomer mixture is used. As the insecticide has been developed for domestic use, it is unlikely that there will be a requirement for metabolism studies in plants or for extensive environmental fate studies. Its metabolism in rats has been reported, with particular attention paid to the fate of the novel alcohol moiety. As with other pyrethroids, ester cleavage and oxidation and conjugation of the alcohol metabolite predominated. The fate of the chrysanthemic acids can be assessed by reference to phenothrin.
  • Degradation Empenthrin is a stable molecule but it would be expected to be labile at pH values above 10.
Empenthrin Preparation Products And Raw materials
Raw materials
Preparation Products
Empenthrin Suppliers
Global(146)Suppliers
  • Supplier：
    Henan Tianfu Chemical Co.,Ltd.
  • Tel：+86-0371-55170693<br/>+86-19937530512
  • Email：info@tianfuchem.com
  • Country：China
  • ProdList：21628
  • Advantage：55
  • Supplier：
    career henan chemical co
  • Tel：+86-0371-86658258<br/>+8613203830695
  • Email：factory@coreychem.com
  • Country：China
  • ProdList：29808
  • Advantage：58
Empenthrin Spectrum
54406-48-3, EmpenthrinRelated Search:
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  • EMPENTHRIN (VAPORTHRIN)
  • 炔戊菊酯 标准品
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  • 2,2-二甲基-3-(2-甲基-1-丙烯基)环丙烷羧酸-1-乙炔基-2-甲基-2-戊烯基酯
  • 丙炔戊烯菊酯
  • 右旋烯炔菊酯
  • 炔戊菊酯
  • 右旋炔戊菊酯
  • 百扑灵
  • 烯炔菊酯/炔戊菊酯
  • (E)-(R,S)-1-乙炔基-2-甲基戊-2-烯基(1R,S)-顺、反-2,2-二甲基-3-(2-甲基丙-1-烯基)环丙烷羧酸酯
  • 烯炔菊酯,右旋反式炔戊菊酯
  • 1-乙炔基-2-甲基-戊-2-烯基酯
  • 烯炔菊酯
  • 右旋反式炔戊菊酯
  • 右旋-反式-2,2-二甲基-3-(2-甲基-1-丙烯基)环丙烷羧酸 (E)-1-乙炔基-2-甲基-戊-2-烯基酯
  • 54406-48-3
  • Cyclopentenylallethrin
  • C13118000 Empenthrin
  • D-EMPENTHRIN
  • Empenthrin (Vaporthrin)
  • Empenthrin 0.1
  • Cyclopropanecarboxylic acid, 2,2-dimethyl-3-(2-methyl-1-propen-1-yl)-, 1-ethynyl-2-methyl-2-penten-1-yl ester
  • 4-Methylhept-4-en-1-yn-3-yl 2,2-dimethyl-3-(2-methylprop-1-en-1-yl)cyclopropanecarboxylate
  • Empenethrin
  • (1R)-2,2-Dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid 1-ethynyl-2-methyl-2-pentenyl ester
  • （E）-（R，S）-1-ethynyl-2-methylpent-2-enyl (1R,S)-cis-trans-2,2-dimethyl-3-(2-methylprop-1-enyl) cyclopropanecarboxylate
  • 1-Ethinyl-2-methyl-2-pentyl-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanocarboxylate
  • empenthrine
  • 1-Ethinyl-2-methylpent-2-enylchrysanthemat
  • empenthrine (draft f-iso)
  • empenthrin (bsi, draft e-iso)
  • Chrysanthemic acid, (E)-1-ethynyl-2-methylpenten-2-yl ester
  • (E)-1-Ethynyl-2-methylpenten-2-yl 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate
  • Empenthrin, Pestanal
  • empenthrin[(1r)isomers]
  • Cyclopropanecarboxylicacid,2,2-dimethyl-3-(2-methyl-1-propenyl)-,1-ethynyl-2-methyl-2-pentenylester
  • 2,2-dimethyl-3-(2-methyl-1-propenyl)-cyclopropanecarboxylicaci1-ethynyl-2-methyl-2-pentenylester

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