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Updated: 2026-09-20

Overview

Cyazofamid is a systemic fungicide belonging to the cyanoimidazole chemical class. It was developed to combat oomycete pathogens, which are responsible for devastating crop diseases. The compound is known for its selective activity, targeting specific biological pathways in oomycetes while posing minimal risk to other organisms. First introduced in the early 2000s, Cyazofamid has become a key tool in integrated pest management (IPM) programs. Its effectiveness against resistant strains of pathogens makes it a valuable alternative to traditional fungicides. The chemical is registered for use in multiple countries, including the US, EU, and Japan.

Physical and Chemical Properties

Cyazofamid appears as a white to light brown crystalline powder with a melting point around 160°C. It is slightly soluble in water but dissolves well in organic solvents such as acetone and methanol. The compound is stable under normal storage conditions but may degrade when exposed to strong acids or bases. The molecular structure of Cyazofamid includes a cyano group and an imidazole ring, which contribute to its fungicidal activity. Its low volatility reduces the risk of environmental contamination through air dispersal. The chemical exhibits moderate persistence in soil, with a half-life ranging from several days to weeks depending on environmental conditions.

Main Applications

Cyazofamid is primarily used to control oomycete diseases in various crops. It is highly effective against late blight in potatoes and tomatoes, downy mildew in grapes and vegetables, and Phytophthora species in ornamental plants. The fungicide is typically applied as a foliar spray or through irrigation systems. In addition to agricultural uses, Cyazofamid is sometimes employed in turf management to control Pythium blight on golf courses. Its systemic action allows for both protective and curative effects, making it suitable for use at different stages of disease development. The compound is often used in rotation with other fungicides to prevent resistance buildup.

Safety and Storage

Cyazofamid is classified as moderately toxic and requires proper handling precautions. Personal protective equipment (PPE) including gloves, goggles, and respiratory protection should be used when handling the concentrated product. The chemical should be stored in its original container in a cool, dry, well-ventilated area away from food and feed. In case of accidental exposure, immediately rinse affected areas with plenty of water and seek medical attention if necessary. Spills should be contained with absorbent materials and disposed of according to local regulations. The compound is toxic to aquatic organisms, so measures must be taken to prevent contamination of water bodies.

B2B Procurement Guide

When purchasing Cyazofamid, buyers should verify the product's CAS number (120116-88-3) and purity specifications, which typically range from 95% to 98%. It's advisable to request certificates of analysis and material safety data sheets from suppliers. Consider the formulation type (wettable powder, suspension concentrate, etc.) based on application needs. Price negotiations should account for order volume, with bulk purchases typically offering better rates. Ensure suppliers comply with Good Manufacturing Practices (GMP) and have proper storage facilities. For international shipments, confirm that the supplier can provide all necessary documentation for customs clearance and meets the regulatory requirements of the destination country.