Empenthrin
- CAS No.
- 54406-48-3
- Chemical Name:
- Empenthrin
- Synonyms
- D-EMPENTHRIN;s2852;ma108;s2852f;s2852forte;VAPORTHRIN;EMPENTHRIN;empenthrine;Empenethrin;Empenthrin 0.1
- CBNumber:
- CB0160557
- Molecular Formula:
- C18H26O2
- Molecular Weight:
- 274.4
- MOL File:
- 54406-48-3.mol
- MSDS File:
- SDS
- Modify Date:
- 2024/5/27 17:30:58
| 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) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS07,GHS09 |
|---|---|
| Signal word | Warning |
| Hazard statements | H302-H411 |
| Precautionary statements | P264-P270-P301+P312-P330-P501 |
| Hazard Codes | Xn;N,N,Xn |
| Risk Statements | 22-51/53 |
| Safety Statements | 61 |
| RIDADR | UN 3082 |
| RTECS | GZ1728000 |
| HS Code | 29162090 |
Empenthrin Chemical Properties,Uses,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 used as a domestic insecticide, especially against moths and other insects which attack fabrics.
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.
Empenthrin Preparation Products And Raw materials
Raw materials
1of2
chevron_rightPreparation Products
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | China | 21675 | 55 | Inquiry |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418679 +86-18949832763 | China | 2989 | 55 | Inquiry |
| Chongqing Chemdad Co., Ltd | +86-023-6139-8061 +86-86-13650506873 | China | 39916 | 58 | Inquiry |
| CONIER CHEM AND PHARMA LIMITED | +8618523575427 | China | 49391 | 58 | Inquiry |
| career henan chemical co | +86-0371-86658258 +8613203830695 | China | 29826 | 58 | Inquiry |
| Shaanxi Dideu Medichem Co. Ltd | +86-29-87569266 15319487004 | China | 2417 | 58 | Inquiry |
| Hebei Mojin Biotechnology Co., Ltd | +86 13288715578 +8613288715578 | China | 12460 | 58 | Inquiry |
| Hebei Yanxi Chemical Co., Ltd. | +86-17531190177; +8617531190177 | China | 6011 | 58 | Inquiry |
| SIMAGCHEM CORP | +86-13806087780 | China | 17367 | 58 | Inquiry |
| TargetMol Chemicals Inc. | +1-781-999-5354 +1-00000000000 | United States | 19892 | 58 | Inquiry |
54406-48-3(Empenthrin)Related Search:
1of4
chevron_right