Triasulfuron

Favorites

Chemical Identification | General Product Information | Physical & Safety Data

Chemical Identification

Common Name

Triasulfuron

中文通用名

醚苯磺隆

IUPAC

1-[2-(2-chloroethoxy)phenylsulfonyl]-3-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)urea

CAS

2-(2-chloroethoxy)-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]benzenesulfonamide

CAS No.

82097-50-5

Molecular Formula

C₁₄H₁₆ClN₅O₅S

Molecular Structure

General Product Information

Category

Herbicides > Sulfonylurea Herbicides

CropUse

Pre-emergence or post-emergence in wheat, barley to control broadleaf weeds and grassy weeds.

Formulation

WP = Wettable powder

Premix

Triasulfuron+isoproturon
Triasulfuron+dicamba
Triasulfuron+butafenacil
Premix Parters: anthraquinone fenpropimorph kresoxim-methyl triadimenol;

Physical & Safety Data

Physical Properties

Physical form:Fine white powder. Density:1.5 g/cm3; Melting point:178.1 °C ( decomp.); Vapour pressure:<2 × 10-3 mPa (25 °C) ( OECD 104); Henry constant:<8 × 10-5 Pa m3 mol-1 (calc.); Partition coefficient(n-octanol and water):logP = 1.1 ( pH 5.0), -0.59 ( pH 6.9), -1.8 ( pH 9.0) (25 °C); pKa:4.64 (20 °C); Solubility:In water 32 ( pH 5), 815 ( pH 7), 13 500 ( pH 8.4) (all in mg/l, 25 °C). In acetone 14, dichloromethane 36, ethyl acetate 4.3 (all in g/l, 25 °C). In ethanol 420, n-octanol 130, 50 8.2 h ( pH 1), 3.1 y ( pH 7), 4.7 h ( pH 10).;

Toxicology

Oral:Acute oral LD₅₀ for rats and mice >5000 mg/kg. Percutaneous:Acute percutaneous LD₅₀ for rats >2000 mg/kg. Mild skin irritant; non-irritating to eyes (rabbits). Non-sensitising to skin (guinea pigs). Inhalation: LC₅₀ (4 h) for rats >5.18 mg/l air.

Environmental Profile

Ecotoxicology:
Algae: EC₅₀ (5-14 d) for Selenastrum 0.035, Scenedesmus 0.77, Anabaena 1.7, Navicula >100 mg/l.Bees:Non-toxic to honeybees. LD₅₀ (acute and contact) >100 µg/bee.Birds:Acute oral LD₅₀ for quail and ducks >2150 mg/kg.Daphnia: LC₅₀ (96 h) >100 mg/l.Fish: LC₅₀ (96 h) for rainbow trout, carp, catfish, sheepshead minnow and bluegill sunfish >100 mg/l.Worms: LC₅₀ (14 d) for earthworms >1000 mg/kg soil.Other aquatic spp.:EC₅₀ (48 h) for Quahog clam 56 mg/l.

Environmental fate:
Animals:Mainly excreted in the urine in unchanged form.Soil:The degradation behaviour in soil is determined by the soil type, pH, and especially temperature and moisture content. Field studies with silty loam, clay loam and sandy loam showed a median DT₅₀ 19 d, dependingPlant:In wheat, metabolism is by hydroxylation (para to the sulfonyl urea bridge), followed by conjugation of various hydroxy metabolites with glucose. 50 in forage c. 3 days. In straw and grain, no residues were d

Transport Information

Signal Word:CAUTION; Hazard Class:III(Slightly hazardous)