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Myclobutanil Basic information
Myclobutanil Chemical Properties
  • Melting point:63-68°C
  • Boiling point:202-208°C
  • Density 1.1614 (rough estimate)
  • vapor pressure 2.13 x l0-4 Pa (25 °C)
  • refractive index 1.6110 (estimate)
  • Flash point:>100 °C
  • storage temp.  0-6°C
  • form neat
  • pka2.30±0.10(Predicted)
  • Water Solubility 142 mg/L (25 ºC)
  • Merck 13,6346
  • BRN 7138849
  • CAS DataBase Reference88671-89-0(CAS DataBase Reference)
  • EPA Substance Registry SystemMyclobutanil (88671-89-0)
Safety Information
Myclobutanil Usage And Synthesis
  • Chemical PropertiesWhite to pale yellow crystalline solid.
  • Usesantibactierial
  • UsesMyclobutanil is an fungicide used on a wide range of food crops. Myclobutanil inhibits the biosynthesis of ergosterol, a critical componet of fungal cell membranes.
  • UsesAgricultural fungicide.
  • UsesMyclobutanil is used for the control of Ascomycetes, Fungi Imperfecti and Basidiomycetes on a wide variety of crops. These include foliar treatment for scab and powdery mildew in apples and pears, powdery mildew, shot hole, blossom blight, and rust in stone fruit, powdery mildew in vines and cucurbits, powdery mildew and rusts on ornamentals, rusts on perennial grasses grown for seed, and various diseases of wheat. It is also used as a seed treatment for control of seed- and soil-borne diseases in barley, maize, cotton, rice and wheat.
  • HazardModerately toxic by ingestion, inhalation,and skin contact.
  • Agricultural UsesFungicide: Widely used to control powdery mildew, rust, sclerotina, spot blight, rot, black rot and similar fungi on a variety of food and non-food crops.
  • Safety ProfileMoterately toxic by ingestion, inhalation, and skin contact. Experimental reproductive effects. When heated to decomposition emits toxic fumes of NOx, SO,, Cl-.
  • Potential ExposureMyclobutanil is a nitrile compound and a triazole fungicide. It is widely used to control powdery mildew, rust, sclerotina, spot blight, rot, black rot and similar fungi on a variety of food and nonfood crops. Nitriles can be derived from salts of cyanide, but are usually less toxic.
  • Metabolic pathwayThere is limited published information available on the metabolism of myclobutanil. In plants and mammals, the butyl group is oxidised to an alcohol and a ketone. In soils, substantial degradation of the molecule occurs under aerobic conditions.
  • ShippingUN2763 Triazine pesticides, solid, toxic, Hazard Class: 6.1; Labels: 6.1-Poisonous materials. UN3077 Environmentally hazardous substances, solid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous hazardous material, Technical Name Required. UN3082 Environmentally hazardous substances, liquid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous hazardous material, Technical Name Required.
  • DegradationMyclobutanil is stable under normal storage conditions (PM). Aqueous solutions decompose on exposure to light. The DT50 is 222 days in sterile water and 25 days in pond water. It was not hydrolysed in 28 days at pH 5,7 and 9 (28 °C).
  • IncompatibilitiesDecomposes on exposure to strong light. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. The triazoles are sensitive to heat, friction, and impact. Sensitivity varies with the type substitution to the triazole ring. Metal chelated and halogen substitution of the triazole ring make for a particularly heat sensitive material. Azido and nitro derivatives have been employed as high explosives. No matter the derivative these materials should be treated as explosives. Nitriles may polymerize in the presence of metals and some metal compounds. They are incompatible with acids; mixing nitriles with strong oxidizing acids can lead to extremely violent reactions. Nitriles are generally incompatible with other oxidizing agents such as peroxides and epoxides. The combination of bases and nitriles can produce hydrogen cyanide. Nitriles are hydrolyzed in both aqueous acid and base to give carboxylic acids (or salts of carboxylic acids). These reactions generate heat. Peroxides convert nitriles to amides. Nitriles can react vigorously with reducing agents. Acetonitrile and propionitrile are soluble in water, but nitriles higher than propionitrile have low aqueous solubility. They are also insoluble in aqueous acids.
  • Waste DisposalConsult with environmental regulatory agencies for guidance on acceptable disposal practices. Contact a licensed disposal facility about surplus and nonrecyclable solutions. Burn in a chemical incinerator equipped with an afterburner and scrubber. Extra care must be exercised as the material in an organic solvent is highly flammable. In accordance with 40CFR165, follow recommendations for the disposal of pesticides and pesticide containers. Containers must be disposed of properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office. Incineration or permanganate oxidation.
Myclobutanil Preparation Products And Raw materials
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