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Chemical Identification
Common Name
Cyazofamid
中文通用名
氰霜唑
IUPAC
4-chloro-2-cyano-N,N-dimethyl-5-p-tolylimidazole-1-sulfonamide
CAS
4-chloro-2-cyano-N,N-dimethyl-5-(4-methylphenyl)-1H-imidazole-1-sulfonamide
CAS No.
120116-88-3
Molecular Formula
C13H13ClN4O2S
Molecular Structure
Category
Activity
Fungicide.
Cyazofamid is a contact fungicide for foliar application; the mobility within the leaf is low. It has been shown to affect all stages in the life cycle of Phytophthora infestans. The product is particularly suited for use in preventative spray schedules. It has residual activity lasting more than seven days. Applications are recommended every 7 days (up to a maximum of 3) though the interval can be extended to 10 days where the risk of disease is low.

BASF is positioning cyazofamid at the later growth stages on potatoes. Acrobat (dimethomorph + mancozeb) will be recommended in the early stages, where the crop is establishing. Ranman will be applied in the later stages where the crop is established.

In potatoes, cyazofamid controls late blight and tuber blight. It controls strains of Phytophthora infestans that are resistant to phenylamide fungicides. In field trials, cyazofamid showed activity equal to or greater than that of standard fungicide treatments at very much lower application rates. The product is safe to crops at up to four times the recommended use rate. ISK recommends its use in IPM schemes.

In the UK, cyazofamid has no LERAP restrictions for its use near water and cyazofamid applications can be alternated with the combination product Intruder (dimethomorph + mancozeb) to provide good control of blight.
CropUse
Crop uses:
Chinese cabbages, cucurbits, lettuces, melons, onions, peppers, potatoes, rice, tomatoes, turf, vines, watermelons

80-100 g ai/ha

Premix
Pyraclostrobin + Cyazofamid
Flumorph+Cyazofamid
Fluazinam+Cyazofamid
Famoxadone+Cyazofamid
Cymoxanil+cyazofamid
Cyazofamid+Propineb
Cyazofamid+Metiram
Physical Properties
Molecular weight:324.8; Physical form:Ivory, odourless powder. Melting point:152.7 °C; Vapour pressure:Stated to be 1.3×10-2 mPa (25, 30, 35 °C); Partition coefficient(n-octanol and water):logP = 3.2 (25 °C); Solubility:In water 0.121 ppm (pH 5, 20 °C).
Toxicology
Oral:Acute oral LD50 for rats >5000 mg/kg. Percutaneous:Acute percutaneous LD50 for rats >2000 mg/kg.?
Environmental Profile
Ecotoxicology: Fish:LC50 (96 h) for carp >0.59 mg/l. Environmental fate: Soil:In soil, DT50 3-5 d. Koc 736-2172. WATER SOLUBILITY: 0.121 ppm at 20°C (pH 5).
Transport Information
Hazard Class:O (Obsolete as pesticide, not classified)

Porduct NewsMore

Canada Approves ISK Biosciences’ Cyazofamid 400 SC Fungicide

Cyazofamid

Australia approves ISK’s fungicide Ranman 400 SC

Cyazofamid

Helena to distribute Summit Agro’s Ranman® fungicide

Cyazofamid

ISK seeks to import cyazofamid in New Zealand

Cyazofamid

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