Prosulfuron
Action/Use:
- Herbicide
Use:
A selective postemergence sulfonylurea herbicide to control weeds in barley, oats, proso millet, rye, sorghum, triticale, and wheat.
Identification
Common Name(s): Prosulfuron (BSI, ISOE)
Chemistry
Class: Sulfonylureaurea.
Formula: C15H16F3N5O4S.
Properties: Colorless, odorless crystals. Melting point 155°C (decomp). Solubility at 25°C in: acetone 160 g/l, dichloromethane 180 g/l, ethanol 8.4 g/l, ethyl acetate 56 g/l, n-hexane 0.0064 g/l, n-octanol 1.4 g/l, toluene 6.1 g/l.
Mode of Action / Resistance Management
Chemical Group: Sulfonylurea
Mode of Action: Inhibition of acetolactate synthase ALS (acetohydoxyacid synthase AHAS)
Action Group: HRAC Group B; WSSA Group 2
Environmental Guidelines
Hazards: Fish: LC50 (96 h) >100 mg/l (rainbow trout, catfish, carp); >55 mg/l (bluegill sunfish, sheepshead minnow). Bird: Oral LD50 >2150 mg/kg (bobwhite quail); 1300 mg/kg (mallard duck). Bee: Oral, Contact LD50 (48 h) >100 µg/bee
Water Solubility: 87 ppm at pH 5, 43,000 ppm at pH 7.7
Safety Guidelines
Signal Word: CAUTION
Toxicity Class: III
Toxicity: (Rat): Oral LD50 4360 mg/kg b.w. Inhalation LC50 >5.14 mg/l air (4 h). (Rabbit): Dermal LD50 >2020 mg/kg b.w. Minimally irritating to eyes, non-irritating to skin
Handling/storage Cautions: Stable
Spill Control/cleanup: Control spill at its source and contain to prevent it from spreading, contaminating soil, or entering sewage and drainage systems or any body of water. Clean up spills immediately. Sweep up material and place in a compatible disposal container. Seal container and arrange for disposition
Product/waste Disposal: Do not reuse product containers. Dispose of product containers, waste containers, and residues according to local, state, and federal health and environmental regulations
Protective Clothing: Coveralls. Waterproof gloves. Shoes plus socks.
