Metalaxyl技术合作

Physical chemistry: white crystals.M.p Tech 63.5-72.3°C,S.g./density 1.20(20°C). V.p0.75mPa(25°C),Solubility In water 8.4g/l(22°C).In ethanol 400,acetone 450,toluene 340,n-hexane 11,n-octanol 68(all in g/l,25°C).Stability stable up to 300°C.Stable in neutral and acidic media at room temperature;on hydrolysis DT50(calc.)(20°C)>200d(Ph1),115d(Ph9),12d(Ph10). Use:To control diseases caused by air-and soil borne Peronosporales on a wide range of temperate,subtropical and tropical crops.Foliar sprays with mixtures of metalaxyl and protectant fungigides are recommended to control air-borne diseases caused by Pseudoperonospora humuli on hops,phytophthora infestats on potatoes and tomatoes, peronospora tabacina on tobacco,Plasmopara viticola on vines,Bremia lactucae on lettuce and downy mildews on various vegetable,at 200-300g/ha.Soil applications of metalaxyl alone are used to control soil-borne pathogens causing root and lower stem rots on avocado and citrus,at 500-1500g/ha,Seed treatments control systemic Peronosporaceae on, maize peas,sorghum and sunflowers,as well as damping-off(Pythium spp.)of various crops. Mammalian toxicology: OralAcute oral LD50 for rats 669mg/kg.Skin and eye Acute percutaneous LD50 for rats>3100mg/kg.Slight irritant to eyes and skin of rabbits; Formulation types: 25%,35% Metalaxyl WP,58%,72% Metalaxy•Mancozeb WP,98% Tech Packing: 25%,35% WP,98% Tech, 58%,72% Metalaxy•Mancozeb WP:25kg/Fiber drum. Specification: Active in gredient % ≥98 Water % ≤ 0.5 Acidity(as H2SO4) %≤ 0.3 Insoluble in acetone %≤ 0.3