Thifensulfuron methyl Chemical Properties

Melting point:

176°C

Density 

1.560±0.06 g/cm3(Predicted)

storage temp. 

Sealed in dry,Room Temperature

Water Solubility 

Practically insoluble in water

solubility 

DMSO (Slightly, Heated), Methanol (Slightly, Heated)

pka

pKa at 25°: 4.0

form 

Solid

color 

White to Almost white

λmax

280nm(Acidic aq.)(lit.)

Merck 

14,9316

BRN 

7448062

LogP

1.560

CAS DataBase Reference

79277-27-3(CAS DataBase Reference)

EPA Substance Registry System

Thifensulfuron-methyl (79277-27-3)

Safety Information

Hazard Codes 

N

Risk Statements 

50/53

Safety Statements 

60-61

RIDADR 

UN3077 9/PG 3

WGK Germany 

2

RTECS 

XM8463000

HazardClass 

9

PackingGroup 

III

HS Code 

29350090

Hazardous Substances Data

79277-27-3(Hazardous Substances Data)

Toxicity

LC50 (96-hour) for both bluegill sun?sh and rainbow trout >100 mg/L; LC50 (48-hour) for Daphnia magna >1,000 mg/L (Humburg et al., 1989); acute oral LD50 for rats >5,000 mg/kg (Hartley and Kidd, 1987).

Thifensulfuron methyl Usage And Synthesis

Uses

Postemergence herbicide used to control wild garlic and many broad-leaved weeds in barley and spring wheat.

Uses

Herbicide.

Definition

ChEBI: A methyl ester resulting from the formal condensation of the carboxy group of thifensulfuron with methanol. It is used as a post-emergence herbicide for the control of grass and broad-leaved weeds.

Agricultural Uses

Herbicide: A herbicide for postemergence broadleaf weed control in crops for food such as soybeans and cotton. Not listed for use in EU countries.

Trade name

ALLY®; BASIS® (rimsulfuron + thifensulfuron methyl); CANVAS® (thifensulfuron methyl + tribenuron methyl + metsulfuron-methyl); DPX-M6316®; EXPRESS®; HARMONY® Extra (thifensulfuron methyl + tribenuron methyl); INM-6316®; PINNACLE®; PROSPECT®; RELIANCE® SYNCHRONY®, (chlorimuron- ethyl + thifensulfuron methyl)

Environmental Fate

Chemical/Physical. May hydrolyze in aqueous solutions forming methyl alcohol and 3-(((((4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino)carbonyl)amino)sulfonyl)-2- thiophenecarboxylic acid.

Metabolic pathway

The hydrolytic degradation of thifensulfuron methyl is pH dependent and, in alkaline condition, specifically yields the corresponding free acid. Primary degradation cleaves the sulfonylurea moiety to give two typical hydrolyzed products, sulfonamide and aminotriazine analogs, derived from thifensulfuron methyl in acidic and neutral conditions. Hydrolysis of the ester linkage proceeds in mammals, plants, soils, and also chemical hydrolysis, and opening of the triazine ring occurs to yield the acetyltriuret analog identified. On the other hand, by hydrolysis, O- demethylated thifensulfuron methyl undergoes opening of the triazine ring to give the corresponding acetyltriuret analog. Under photolytic conditions, methyl 3-(4-methoxy-6-methyl-1,3,5-triazin-2- yl)aminothiophene-2-carboxylate is identified.

Thifensulfuron methyl(79277-27-3)Related Product Information

• Bensulfuron
• METSULFURON METHYL
• Tetrahydrothiophene
• Methyl salicylate
• Basic Violet 1
• 2-Methoxyethanol
• Methanol
• Thiophene
• Thifensulfuron
• 3-Bromothiophene
• TOLBUTAMIDE
• Rimsulfuron
• Methyl acrylate
• Kresoxim-methyl
• Nicosulfuron
• Tribenuron methyl
• Pyrazosulfuron-ethyl
• Cephalothin sodium