Flumetralin

Identification

Synonyms: N-(2-chloro-6-fluorobenzyl)-N-ethyl-α,α,α-trifluoro-2,6-dinitro-p-toluidine （IUPAC); 'Prime+' (Syngenta); 'Brotal' (IPESA). Other products 'Flupro' (Chemtura); 'Podos' (Milenia). Discontinued products 'Premier' * (Ciba).
CAS No.: 62924-70-3
Molecular Weight: 421.7351
Molecular Formula: C16H12ClF4N3O4
Structural Formula:
Form: Yellow to orange, odourless crystals.
M.p.: 101.0–103.0 °C; (tech., 92.4–103.8 °C)
V.p.: 3.2 × 10-2 mPa (25 °C) (OECD 104)
Kow: logP = 5.45 (25 °C)
Henry: 0.19 Pa m3 mol-1 (calc.)
S.g./density: 1.54
Solubility: In water 0.07 mg/l (25 °C). In acetone 560, toluene 400, ethanol 18, n-hexane 14, n-octanol 6.8 (all in g/l, 25 °C).
Stability: Decomposes exothermically above 250 °C. Hydrolytically stable between pH 5 and pH 9.

Application

Flumetralin is used to control sucker growth in tobacco, applied at 10–15 ml of 1–35% solution per plant. Phytotoxicity May cause some injury to immature plants.

Specification*

TC, EC

Standard Packaging

Risks and Safety Information

Hazard to environment. Class 9

Acute oral LD50 for rats >5000 mg/kg. Skin and eye Acute percutaneous LD50 for rats >2000 mg/kg. EC formulation (150 g/l) is a moderate skin irritant and an extreme eye irritant. Birds LD50 for bobwhite quail and mallard ducklings >2000 mg/kg. Fish Toxic to fish; LC50 for bluegill sunfish 18, Daphnia LC50 (48 h) >66 μg/l. Algae EC50 for Selenastrum >0.85 mg/l.Bees Non-toxic.