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Diafenthiuron

Introduction

Diafenthiuron is a high-effective fungicide with activity against several diseases on many crops and ornamental plants, such as aphids, leafhoppers, whiteflies.
Description

Chemical Name: 1-tert-butyl-3-(2,6-di-isopropyl-4-phenoxyphenyl)thiourea

Formula: C22H19Br2NO3

Molecular weight: 505.2

CAS No.: 80060-09-9

Structure:

Description:
Appearance: Colourless crystals.
Melting Point: 100-102 ºC.
Vapour Pressure: 1.24×10-5 mPa (25°C, gas saturation method).
Stability: In water <g/l (25 ºC). In dioxane 900, cyclohexanone 750, 0.2  dichloromethane 700, acetone 500, benzene 450, dimethyl sulfoxide 450, xylene 250, ethanol 15, isopropanol 6 (all in g/l, 20 ºC).

Specification: 95%TC,50%SC,50%WP, 25%EC.

Uses: A potent insecticide, effective by contact and ingestion against a wide range of pests. Crop protection uses include: Coleoptera (2.5-7.5 g/ha), Heteroptera (5.0-7.5 g/ha), Homoptera (6.2-12.5 g/ha), Lepidoptera (5.0-21 g/ha) and Thysanoptera (5-10 g/ha) in cereals, citrus, cotton, grapes, maize, oilseed rape, soya beans, top fruit and vegetables. It controls Acrididae (5.0-12.5 g/ha), and is recommended against locusts. Soil surface sprays (2.5-5.0 g/ha) control Noctuidae. It is used against indoor crawling and flying insects (12.5 mg/m2) and pests of stored grain (0.25-0.5 g/t) and timber (Blattodea, Culicidae, Muscidae). Dip or spray (12.5-75 mg/l), and pour-on (0.75 mg/kg b.w.) applications give good control of Muscidae, Tabanidae, Ixodidae and other Acari on cattle, sheep and pigs, etc.

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