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Product Name

Thidiazuron

Function

Plant Growth Regulator

Specification

98%Tech, 50%WP

Chemical Name

N-phenyl-N'-1,2,3-thiadiazol-5-ylurea

CAS No.

51707-55-2

Empirical Formula

C9H8N4OS

Chemical Formula of Active Ingredient

Toxicology

Oral Acute oral LD50 for mice >5000, rats >4000 mg/kg. 

Skin and eye Acute percutaneous LD50 for rats >1000, rabbits >4000 mg/kg. Mild eye irritant; non-irritating to skin (rabbits). No skin sensitisation (guinea pigs). 

Inhalation LC50 (4 h) for rats >2.3 mg/l air. 

NOEL (90 d) for rats 200 mg/kg diet; (1 y) for dogs 100 mg/kg diet. No significant effects observed in a 2 y carcinogenicity study in mice and a 3-generation reproduction study in rats. 

Other Acute i.p. LD50 for rats 4200 mg/kg. Non-mutagenic. 

Toxicity class WHO (a.i.) U

Applications

Mode of action Plant growth regulator, absorbed by the leaves, which stimulates formation of an abscission layer between the plant stem and the leaf petioles, causing the dropping of entire green leaves.  Uses Used for defoliation of cotton, in order to facilitate harvesting; applied at 0.21 kg/ha per season.

Package

25KG/Drum, 25KG/Bag, etc

 

 

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