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Crop Protection Database

Butralin

Action/Use:
  • Herbicide
  • ;
  • Plant Growth Regulator
Use: Amex* for annual broadleaf weeds, grasses in beans, cotton, rice, soybeans, upland rice, young orchards. Monamex* for annual broadleaf weeds. Tabamex*, Tamex*, Tobago* for sucker control of tobacco.
Identification
Common Name(s): Butralin (ANSI, BSI, ISOE, WSSA); ; Butraline (ISOF)
Chemistry
Properties: Yellow-orange crystallized solid. Melting point 359ºC (pure 61ºC). Boiling point 134º-136ºC. Specific gravity solid 1.102 (20ºC), liquid 1.072 (70ºC). Weak oxidizer; stable to hydrolysis and somewhat to photolysis.
Butralin
Mode of Action / Resistance Management
Chemical Group: Dinitroaniline.
Mode of Action: Microtubule assembly inhibition.
Action Group: HRAC Group K1; WSSA Group 3.
Environmental Guidelines
Water Solubility: Practically insoluble, 0.3 mg/l at 24°C
Safety Guidelines
Signal Word: CAUTION
Toxicity Class: III
Toxicity: (Rat): Oral LD50 1540 mg/kg (male); 891 mg/kg (female). (Rabbit): Dermal LD50 >2000 mg/kg. Moderate eye irritant, nonirritant to skin
Suppliers and Branded Products
Discontinued Names:
Linamex*
Monamex*