White powder 57837-19-1 Metalaxyl Plant Fungicide / Natural Garden Fungicide
Metalaxyl is a systemic, benzenoid fungicide used in mixtures as a foliar spray for tropical and subtropical crops, as a soil treatment for control of soil-borne pathogens, and as a seed treatment to control downy mildews. Experimental-use permits are in effect authorizing the application of metalaxyl on some food crops, although tobacco, ornamentals, conifer, and turf applications are the major uses. Smokers could be exposed through inhalation. Products containing metalaxyl must bear the signal word "Caution."
Product name: Metalaxyl 5%GR
Pesticide category: Fungicide
CAS NO.: 57837-19-1
Appearance (TC): White powder
Appearance (5%GR): Gray particles
Brand name: Greenriver/ as per customers request.
Uses 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 fungicides are recommended to control air-borne diseases caused by Pseudoperonospora humuli on hops, Phytophthora infestans on potatoes and tomatoes, Peronospora tabacina on tobacco, Plasmopara viticola on vines, Bremia lactucae on lettuce, and downy mildews on various vegetables, at 200-300 g/ha. Soil applications of metalaxyl alone are used to control soil-borne pathogens causing root and lower stem rots on avocado and citrus, at 500-1500 g/ha. Seed treatments control systemic Peronosporaceae on maize, peas, sorghum and sunflowers, as well as damping-off (Pythium spp.) of various crops.
Mol. wt. 279.3 M.f. C15H21NO4 Form Fine, white powder. M.p. Tech. 63.5-72.3 ºC B.p. 295.9 °C/101 kPa V.p. 0.75 mPa (25 ºC) KOW logP = 1.75 (25 ºC) Henry 1.6 ´ 10-5 Pa m3 mol-1 (calc.) S.g./density 1.20 at 20 ºC Solubility In water 8.4 g/l (22 ºC). In ethanol 400, acetone 450, toluene 340, n-hexane 11, n-octanol 68 (all in g/l, 25 ºC). Stability Stable up to 300 ºC. Stable in neutral and acidic media at room temperature; on hydrolysis, DT50 (calc.) (20 ºC) >200 d (pH 1), 115 d (pH 9), 12 d (pH 10). pKa <<0
Mode of Action:
Systemic fungicide with protective and curative action, absorbed through the leaves, stems, and roots