Products

English Name: Iprodione
CAS Number: 36734-19-7
Molecular Formula: C13H13Cl2N3O3
Molecular Weight: 330.17
EINECS Number: 253-178-9
Melting Point: 130-134°C (literature)
Density: 1.6223 (rough estimate)
Vapor Pressure: 5×10^-7 Pa (25°C)
Refractive Index: 1.6140 (estimate)
Flash Point: 2°C
Storage Conditions: Sealed, dry, room temperature
Solubility: DMSO 100 mg/mL (302.87 mM)
Acidity Coefficient (pKa): 9.19 ± 0.20 (Predicted)
Appearance: Solid, white to off-white
Water Solubility: 0.0013 g/100 mL (Merck 13,5096)
BRN: 895003
Henry’s Law Constant: 7.1×10^2 mol/(m3·Pa) at 25℃, Barcelo and Hennion (1997)

Chemical Properties:
Pure product is colorless crystals. Melting point about 136°C, vapor pressure 2.7×10^-5 Pa (20°C). Solubility in methanol and ethanol is 25 g/L, in acetone, ethyl benzene, anisole 300 g/L, in dichloromethane, dimethylformamide, 1-methyl-2-pyrrolidone 500 g/L, and water solubility is 13 mg/L (20°C). Not prone to oxidation, generally stable under normal storage, unstable under alkaline conditions, non-corrosive. Industrial product melting point: 126-130°C.

Uses:
A broad-spectrum, contact fungicide. Works on spores, mycelium, and sclerotia, inhibiting spore germination and mycelial growth. Almost non-systemic in plants, classified as a protective fungicide. Effective against Botrytis, Sclerotinia, Alternaria, Monilinia, and Corynespora. For controlling tomato early blight, start spraying about 10 days after transplanting: use 50% wettable powder at 11.3-22.5 g/100 m², spray once every 2 weeks for a total of 3-4 times. For gray mold, start before disease onset: use 50% wettable powder at 5 g/100 m², spray every 10-14 days (especially during flowering and fruiting), 3-4 times, improving tomato yield and quality. For seed treatment, use 100-200 g active ingredient per 100 kg of seed to prevent bunt caused by Tilletia species and wheat loose smut. Use 50% wettable powder at 4 g/L solution to soak potato seed tubers to prevent black scurf caused by Rhizoctonia solani. Onion and garlic bulbs treatment can prevent black rot. Use 50% wettable powder at 11.3-15 g/100 m² during early and full bloom of rapeseed to prevent sclerotinia disease. Alternating or mixing with other fungicides is recommended to avoid resistance.

Iprodione is a contact fungicide effective against spores and mycelium, controlling diseases caused by Botrytis, Corynespora, Sclerotinia, Monilinia, and Alternaria. It can also be used for seed treatment.

Broad-spectrum protective fungicide.

Precautions:
[1] Avoid using with strong alkaline agents.
[2] Avoid long-term continuous use to prevent resistance; alternate or mix with fungicides of different action.