See All ProductsSulfometuron-methyl

Action

Herbicide

Use

Controls many annual and perennial grasses, and broadleaf weeds in noncropland, and reforestation areas including certain conifers and hardwoods.

Formulation

Water-dispersible granule.

Identification

Common Names

Sulfometuron-methyl (ISO modified); Sulfometuron (ANSI, BSI, ISO, ISO-F, WSSA)

Exp. Code Number

DPX T5648 (DuPont)

CAS Codes

74222-97-2; 74223-56-6 (Sulfometuron)

Other Code Number

SHA 122001

Chemistry

Compositions

Methyl 2-(4,6-dimethylpyrimidin-2-ylcarbamoylsulfamoyl)benzoate or Methyl 2-[3-(4,6-dimethylpyrimidin-2-yl)ureidosulfonyl]benzoate (IUPAC); Methyl 2-[[[[(4,6-dimethyl-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]benzoate (CAS)

Properties

Melting point 203-205°C.

Molecular Formula

C15H16N4O5S

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

Hazard

Fish: LC50 (96 h) >12.5 mg/l (rainbow trout and bluegill sunfish). Birds: Acute oral LD50 >5000 mg/kg (mallard ducks), >5620 mg/kg (bobwhite quail). Bees: Contact LD50 >100 µg/bee.

Water Solubility

244 mg/l (pH 7, 25°C)

Safety Guidelines

Signal Word

CAUTION

Toxicity Class

IV

Toxicity

(Rat): Oral LD50 >5000 mg/kg (male); Inhalation: LC50 (4 h) >11 mg/l air. (Rabbit): Dermal LD50 >2000 mg/kg.