国产人妻人伦精品久久久_成年站免费网站看v片在线_午夜精品久久久久久久喷水_免费看成人aa片无码视频_国产一卡二卡精品乱码

Products

Alpha-cypermethrin

Generic name: Alpha-cypermethrin
Alias: α-Cypermethrin; alphametrin; bestox
Chemical name:
(1) 2,2-dimethyl-3-(2,2-dichlorovinyl)cyclopropanecarboxylate-α-cyano-(3-phenoxy)-benzylester
(2) cyano-3-phenoxybenzyl 3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropane carboxylate
Molecular formula: C22H19Cl2NO3
Molecular weight: 416.3
CAS RN: 67375-30-8 
Physical and chemical properties:
Appearance: White crystalline solid
Assay: 97%
Relative density: 1.12
Vapour pressure: 23×10-2mPa/20°C
Melting point: 75-81°C
Flashing point: ≥80°C
Solubility: Extremely low solubility in water, well soluble in ketones, alcohols, aromatics and other organic solvents.
Stability: Stable in neutral and weak acid condition. Hydrolyze in strong alkali. Stable to light and heat.
Acute toxicity: Rat percutaneous LD50: 500mg/kg; Rat per os LD50: 60 ~ 80mg/kg
Chronic toxicity: No effect dose on rat is 60ppm.
Application: Alpha-cypermethrin is a highly effective pyrethroid with 2 isomers. Cypermethrin has 8 isomers. The efficacy of alpha-cypermethrin is 2-3 times of cypermethrin with broad-spectrum. The dosage on crop pest is only 7-30 (g a.i/ha). This product has strong tag out and stomach toxicity effect and is mainly used to protect cotton, fruit tree, vegetable, flower and grain.
Packing: 25kg/drum, 50kg/drum

人人澡 人人澡 人人看| 18禁在线永久免费观看| 色婷婷综合中文久久一本| 国产猛男猛女超爽免费视频| 久久夜色撩人精品国产小说| 国产三级在线观看播放| 国产av偷闻女邻居内裤被发现| 国产精品亚洲lv粉色| 国产视频深夜在线观看| 日韩av无码精品一二三区| 夜夜揉揉日日人人| 一区二区av在线免费| 亚洲中文无码永久免| 中文字幕精品久久久久人妻| 中字幕一区二区三区乱码| 午夜性色一区二区三区不卡视频| 日韩av无码久久一区二区| 一个人看的www免费视频中文 | 国产精品久久久久7777| 狠狠色丁香婷婷综合潮喷| 久久久一本精品99久久| 亚洲精品无码成人片久久不卡| 少妇扒开粉嫩小泬视频| 国产精品三级高清在线| 人妻综合专区第一页| 亚洲av成人片色在线观看吉沢| 蜜臀av在线播放| 国产精品久久久av久久久| 午夜福利伦伦电影理论片在线观看 | 伊人久久精品一区二区三区| 国产天美传媒性色av| 国内精品午夜免费毛片| 欧洲熟妇乱xxxxx大屁股7| 丁香激情六月综合五月| 欧美自拍嘿咻内射在线观看| 吃奶呻吟打开双腿做受动态图| 中文字幕久热精品视频在线 | 色先锋影音岛国av资源| 蜜桃传媒mv在线免费| 性高湖久久久久久久久aaaaa| 国产肥熟女视频一区二区三区|