Fluazinam is a broad-spectrum fungicide used in agriculture. It is classed as a diarylamine and more specifically an arylaminopyridine. Its chemical name is 3-chloro-N--5-trifluoromethyl-2-pyridinamine. Additional technical information: fluazinam is a low-volatility, crystalline active ingredient with high lipophilicity and limited water solubility. It acts primarily by uncoupling oxidative phosphorylation in target organisms, inhibiting spore germination and early infection processes. Fluazinam is effective against a range of oomycetes and foliar fungal pathogens, shows good rainfastness when applied as a protectant, and is widely formulated as wettable powders and suspension concentrates. Typical physicochemical data used in product development include melting point, solubility in organic solvents, octanol-water partition coefficient, and stability to hydrolysis and photolysis under field-relevant conditions.
Technical-grade fluazinam is normally specified with a high active ingredient content, frequently in the range of 95.0 to 98.5 percent by weight. Total related compounds and impurities are typically limited to 1.5 to 2.0 percent by weight maximum in finished technical material, with individual process-related or degradation impurities commonly restricted to 0.2 to 0.5 percent each depending on specification and regulatory requirement. Common categories of related compounds include minor hydrolysis products, dehalogenated or partially reduced pyridinyl derivatives, and trace aromatic amine byproducts from synthesis; residual solvents and inorganic residues are controlled to standard ppm limits. Exact impurity identities and limits vary by manufacturer and country registration, so product-specific certificates of analysis and regulatory dossiers should be consulted for precise values.
Fluazinam is used as a protectant fungicide to prevent infection by oomycetes and a range of foliar fungi; common applications include potato late blight suppression, control of certain diseases on vegetables, fruit and ornamentals, and protection of seedlings and transplants during early growth stages.
Fluazinam is primarily a contact protectant with translaminar activity in some formulations; it does not provide strong xylem- or phloem-mediated systemic movement and is relied upon for residual surface protection and inhibition of spore germination.
Fluazinam belongs to the diarylamine/arylaminopyridine chemical class and is assigned to the FRAC mode of action group for uncouplers of oxidative phosphorylation, commonly referenced as Group 29.
Fluazinam is often used in integrated programs and can be combined or rotated with systemic fungicides active against oomycetes and fungi, for example phenylamide or carboxylic acid amide chemistries and multisite protectants; specific tank-mix partners and rotation partners should be chosen according to label directions, resistance management guidelines, and compatibility testing.
