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DPX-T5648

Basic information Safety Supplier Related

DPX-T5648 Basic information

Product Name:
DPX-T5648
Synonyms:
  • Oust 75DF
  • OUST WEED KILLER(R)
  • oust
  • methyl 2-[[[[(4,6-dimethyl-2-pyrimidinyl)amino]carbonyl]amino]sulphonyl]benzoate
  • DPX-5648(DU Pont)
  • Oust(Du Pont)
  • SULFOMETURON METHYL, 100MG, NEAT
  • Sulfometuron methyl PESTANAL
CAS:
74222-97-2
MF:
C15H16N4O5S
MW:
364.38
EINECS:
277-780-6
Product Categories:
  • SN - SZPesticides&Metabolites
  • Alpha sort
  • Environmental Standards
  • Herbicides
  • MetabolitesPesticides&Metabolites
  • Pesticides&Metabolites
  • HERBICIDE
  • Q-ZAlphabetic
  • S
  • Urea structure
  • NULL
  • VX:15689727968
Mol File:
74222-97-2.mol
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DPX-T5648 Chemical Properties

Melting point:
203-205°C
Boiling point:
197°C (rough estimate)
Density 
1.48
refractive index 
1.6000 (estimate)
form 
neat
pka
5.7(at 25℃)
CAS DataBase Reference
74222-97-2(CAS DataBase Reference)
EPA Substance Registry System
Sulfometuron methyl (74222-97-2)
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Safety Information

Hazard Codes 
N
Risk Statements 
50
Safety Statements 
61
RIDADR 
UN3077 9/PG 3
WGK Germany 
2
RTECS 
DG9096550
Hazardous Substances Data
74222-97-2(Hazardous Substances Data)
Toxicity
LD50 in male, female rats (mg/kg): >5000, >5000 orally (Harding)

MSDS

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DPX-T5648 Usage And Synthesis

Uses

Herbicide.

Definition

ChEBI: A benzoate ester that is the methyl ester of 2-{[(4,6-dimethylpyrimidin-2-yl)carbamoyl]sulfamoyl}benzoic acid.

Agricultural Uses

Herbicide: Used to control annual and perennial grasses and broadleaf weeds on landscapes, rights-of-ways, fence rows, forests, industrial structure areas and non-crop land. Not listed for use in EU countries. Registered for use in the U.S.

Trade name

DPX-T5648®; KNOCKOUT®; LANDMARK® MP (sulfometuron-methyl + chlorsulfuron); OUST®; OUSTAR®; RIVERDALE®; STAMPRO®

Environmental Fate

Soil. In unsterilized soils, 58% of 14C-labeled sulfometuron-methyl degraded after 24 weeks. Metabolites identified were 2,3-dihydro-3-oxobenzisosulfonazole (saccharin), methyl-2-(aminosulfonyl)benzoate, 2-aminosulfonyl benzoic acid, 2-(((aminocarbonyl)amino)sulfonyl)benzoate and [14C]carbon dioxide. The rate of degradation in aerobic soils was primarily dependent upon pH and soil type (Anderson and Dulka, 1985). The reported half-life in soil was approximately 4 weeks (Hartley and Kidd, 1987).
Chemical/Physical. Sulfometuron-methyl is stable in water at pH values of 7 to 9 but is rapidly hydrolyzed at pH 5.0 forming methyl 2-(aminosulfonyl)benzoate and saccharin. When sulfometuron-methyl in an aqueous solution was exposed to UV light (λ = 300–400 nm), it degraded to the intermediate methyl benzoate which then mineralized to carbon dioxide (Harvey et al., 1985). The hydrolysis half-lives of metsulfuron-methyl at pH 5 and 25 and 45°C were 33 and 2.1 days, respectively. At pH 7 and 45°C, the hydrolysis half-life is 33 days (Beyer et al., 1988).

Metabolic pathway

Sulfometuron methyl is relatively stable at neutral and basic pH and undergoes cleavage of the sulfonylurea linkage to yield methyl-2-(aminosulfonyl)benzoate and 4,6-dimethyl-2-aminopyrimidine as major hydrolysis products, and saccharin as the terminal product. These products are also observed as major degradation products in soils. In plants, monohydroxymethylsulfometuron methyl is the primary metabolite which is also identified as a mammalian and soil metabolite and undergoes further degradation by mammals to give 2-amino-4-hydroxymethyl-6- methylpyrimidine.

DPX-T5648Supplier

Hubei Xinhe Chemical Industry Co.,ltd. Gold
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