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Metalaxyl |
| Common name: |
Metalaxyl |
| Chemical name: |
Methyl N-(2,6-dimethylphenyl)-N-(methoxyacetyl)-DL-alaninate
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| Molecular formula: |
C15H21NO4 |
Molecular weight: |
279.3 |
CAS No.: |
35554-44-0 |
Structural formula: |
 |
Physical chemistry: |
Form similar white crystals.M.p Tech 63.5-72.3℃,S.g./density 1.20(20℃). V.p0.75mPa(25℃),Solubility In water 8.4g/l(22℃).In ethanol 400,acetone 450,toluene 340,n-hexane 11,n-octanol 68(all in g/l,25℃).Stability stable up to 300℃. Stable in neutral and acidic media at room temperature;on hydrolysis DT50(calc.)(20℃) >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 |
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