alpha cypermethrin
Alpha-cypermethrin
CAS: 67375-30-8
Molecular Formula: C22H19Cl2NO3
alpha cypermethrin - Names and Identifiers
alpha cypermethrin - Physico-chemical Properties
| Molecular Formula | C22H19Cl2NO3 |
| Molar Mass | 416.3 |
| Density | 1.12 |
| Melting Point | 78-81℃ |
| Boling Point | 826°C at 760 mmHg |
| Flash Point | 453.3°C |
| Water Solubility | 0.01 mg l-1 (25 °C) |
| Vapor Presure | 2.03E-27mmHg at 25°C |
| Storage Condition | 2-8℃ |
| Refractive Index | 1.6200 (estimate) |
| Physical and Chemical Properties | The pure chemical properties are white to cream crystals. M. p.80.5 ℃, relative density 1.12, vapor pressure 170 × 10-6Pa at 20 ℃. Soluble in alcohols, ketones and aromatic hydrocarbon organic solvents, such as cyclohexanone 515g/L, xylene 315g/L, solubility in water 5~10mg/L (0.01~0.2mg/L). It is stable under acidic and neutral conditions, easy to hydrolyze under strong alkaline conditions, and has good thermal stability. |
| Use | Widely used in the control of cotton, fruit, soybean, vegetables and other crops of Lepidoptera, Coleoptera and binocular pests |
alpha cypermethrin - Risk and Safety
| Hazard Symbols | T - Toxic N - Dangerous for the environment  |
| Risk Codes | R25 - Toxic if swallowed R37 - Irritating to the respiratory system R48/22 - Harmful danger of serious damage to health by prolonged exposure if swallowed. R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S60 - This material and its container must be disposed of as hazardous waste. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | UN 2811 |
alpha cypermethrin - Upstream Downstream Industry
| Raw Materials | Sodium cyanide Hydrochloric acid Ethyl Alcohol |
alpha cypermethrin - Nature
| storage conditions | Sealed in dry,2-8°C |
| water solubility | 0.01 mg l-1 (25 °C) |
| morphology | neat |
| BRN | 8444118 |
| stability | Stable. Incompatible with strong oxidizing agents. |
| EPA chemical information | .alpha.-Cypermethrin (67375-30-8) |
Last Update：2024-04-10 22:29:15
alpha cypermethrin - Uses and synthesis methods
use
1, cypermethrin high-efficiency isomer. It has the effects of contact and stomach toxicity, wide insecticidal spectrum, fast knockout rate and high biological activity. It is mainly used to control various crop pests and sanitary pests on cotton, vegetables, fruit trees and tea. 4.5% emulsifiable concentrate 336~666mL (active ingredient 15~30g)/hm2 was used to control cotton aphid and 600 ~ 700L of water was sprayed evenly. Control of cotton bollworm and cotton red bollworm during the incubation period of the 2. three generations of eggs, with 4.5% emulsifiable concentrate 336~666mL (active ingredient 15~30g)/hm2 to 750 ~ 900L of water evenly spray. Control of rapeseed aphid, cabbage worm and diamondback moth with 4.5% emulsifiable concentrate 200~560mL (active ingredient 9~25g)/hm2 to spray 600 ~ 750L of water evenly. For the control of houseflies and mosquitoes, 0.2~0.4g (active ingredient 9~18mg) of. 5% wettable powder is used to spray 250 times of water per square meter. Control cockroaches per square meter with 4.5% wettable powder 0.9g (effective ingredient 40.5mg) to 250~300 times the water spray.
2. Lepidoptera, Coleoptera and Binocular Pests Widely Used to Control Cotton, Fruit Trees, Soybeans, Vegetables and Other Crops
production method
using dichlorochrysanthemum acid (cis inverse ratio is 3/7) as the starting material, cis chrysanthemum acid (content> 93%, cis inverse ratio is 8/2) is obtained after cis-trans separation, cis-cypermethrin is synthesized by ether aldehyde-acyl chloride method, the content is 82%, and then epimerized to obtain high-efficiency cis-cypermethrin, the content is 92%, or α. And realize the process of converting β-body into α-body epimers, eliminating the steps of cis-trans isomer separation of dichlorochrysanthemum acid stereoselective synthesis. See "Pesticide Translation Collection", 1991,13(6):35.
category
Pesticides
toxicity classification
High toxicity
acute toxicity
oral-rat LD50: 79 mg/kg
flammability hazard characteristics
Flammable; combustion produces toxic chloride and nitrogen oxide gas
storage and transportation features
The warehouse is ventilated and dry at low temperature; stored and transported separately from food raw materials
fire extinguishing agent
Dry powder, foam, sand
Last Update：2024-04-10 22:29:15
alpha cypermethrin - Security information
| WGK Germany | 3 |
| RTECS number | GZ1250000 |
| HazardClass | 6.1( B ) |
| PackingGroup | III |
| toxic substance data | 67375-30-8(Hazardous Substances Data) |
Last Update：2024-04-09 15:16:16
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View History
Raw Materials for alpha cypermethrin