Folpet is a protective leaf-fungicide. Its mode of action inhibits normal cell division of a broad spectrum of microorganisms. It is used to control cherry leaf spot, rose mildew, rose black spot, and apple scab. Used on berries, flowers, ornamentals, fruits and vegetables, and for seed- and plant-bed treatment. Also used as a fungicide in paints and plastics, and for treatment of internal and external structural surfaces of buildings.

Stability: Stable in water 1 mg/L at 25°C, slightly soluble in organic solvents, e.g. 3-4% in alphatic ketones and 0.1-1 % in hydrocarbons. In chloroform 8.7, benzene 2.2, isopropanol 1.25 (all in g/100 ml at 20°C).

Toxicity: Oral LD50 (Rat)>10,000 mg/kg. Inhalation LC50 Actual (2 h.) 5 mg/l; 12 h.) 6 mg/l. Dermal LD50 (Rabbit) >5,000 mg/kg.