Overview
Dimethomorph is a systemic fungicide belonging to the morpholine class, widely used in agriculture for its efficacy against downy mildew and other fungal pathogens. It is known for its dual action, offering both protective and curative benefits. The compound is particularly effective in vineyards and potato fields, where downy mildew can cause significant crop losses. Developed in the late 20th century, dimethomorph has become a staple in integrated pest management (IPM) programs. Its mode of action involves inhibiting fungal cell wall synthesis, making it a valuable tool for farmers seeking to minimize crop damage while reducing reliance on broad-spectrum fungicides.
Physical and Chemical Properties
Dimethomorph appears as a white to off-white crystalline powder with a melting point of approximately 137-139°C. It is slightly soluble in water but exhibits better solubility in organic solvents such as acetone and methanol. The compound's molecular weight is 387.86 g/mol, and its molecular formula is C21H22ClNO4. The fungicide is stable under normal storage conditions but should be kept away from moisture and direct sunlight to maintain its efficacy. Its systemic properties allow it to be absorbed by plants, providing internal protection against fungal infections.
Main Applications
Dimethomorph is primarily used to control downy mildew in crops such as grapes, potatoes, and vegetables. It is often applied as a foliar spray, either alone or in combination with other fungicides, to enhance its spectrum of activity. The compound is particularly effective in regions with high humidity, where downy mildew thrives. In addition to its agricultural uses, dimethomorph is sometimes employed in horticulture to protect ornamental plants from fungal diseases. Its systemic action ensures that even new growth is protected, making it a preferred choice for long-term disease management.
Safety and Storage
When handling dimethomorph, it is essential to wear appropriate personal protective equipment (PPE), including gloves, goggles, and a respirator, to avoid inhalation or skin contact. The compound should be stored in a cool, dry place, away from food, feed, and beverages. In case of accidental exposure, rinse the affected area with plenty of water and seek medical attention if necessary. Proper disposal of unused product and containers is critical to prevent environmental contamination. Always follow local regulations and guidelines for pesticide storage and disposal.
B2B Procurement Guide
When procuring dimethomorph, B2B buyers should verify the CAS number (110488-70-5) and purity levels to ensure product quality. Suppliers should provide certificates of analysis (CoA) and evidence of compliance with agricultural regulations in the target market. Price ranges typically vary between $50 and $100 per kilogram, depending on quantity, purity, and supplier reputation. Bulk purchases may offer cost savings, but buyers should also consider logistics and storage requirements. Establishing long-term relationships with reputable suppliers can ensure consistent quality and reliable delivery.
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