Triasulfuron Property

Melting point:

178°C

Boiling point:

150-260 °C

Density 

1.5218 (rough estimate)

vapor pressure 

0Pa at 25℃

refractive index 

1.5630 (estimate)

storage temp. 

0-6°C

solubility 

DMSO (Slightly), Methanol (Slightly, Heated)

pka

4.34±0.10(Predicted)

BRN 

7151883

LogP

1.6-2.6 at 25℃ and pH5-9

Dissociation constant

4.64 at 20℃

CAS DataBase Reference

82097-50-5(CAS DataBase Reference)

EPA Substance Registry System

Triasulfuron (82097-50-5)

Safety

Hazard Codes 

N

Risk Statements 

50/53

Safety Statements 

60-61

RIDADR 

UN3077 9/PG 3

WGK Germany 

2

RTECS 

DB1554000

HS Code 

29350090

Hazardous Substances Data

82097-50-5(Hazardous Substances Data)

Toxicity

LD50 in rats (mg/kg): >5000 orally; >2000 dermally; LC50 (4 hr) in rats: >5185 mg/m3 by inhalation (Amrein, Gerber)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H332Harmful if inhaled

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P271Use only outdoors or in a well-ventilated area.

P273Avoid release to the environment.

P391Collect spillage. Hazardous to the aquatic environment

P501Dispose of contents/container to..…

Triasulfuron Chemical Properties,Usage,Production

Uses

Herbicide.

Definition

ChEBI: An N-sulfonylurea that is N-[o-(2-chloroethoxy)phenyl]sulfonylurea in which one of the hydrogens attached to the non-sulfonylated nitrogen has been replaced by a 4-methoxy-6-methyl-1,3,5-triazin-2-yl group A herbicide used to control broad-leaved weeds in cereals, its use within the EU has been banned after September 2017 on the grounds of potential groundwater contamination and risks to aquatic life.

Agricultural Uses

Herbicide: Used for the control of annual ryegrass, paradoxa grass and a wide range of broadleaf weeds in wheat and the post-emergence control of wild radishes in wheat, oats and barley. Registered for use in EU countries . Registered for use in the U.S

Trade name

AMBER®; CGA 131036®; LOGRAN®; RAVE®

Metabolic pathway

Triasulfuron undergoes hydrolytic degradation, especially under acidic conditions, giving rise to cleavage of the sulfonylurea linkage, producing the major products 2-(2-chloroethoxy)benzenesulfonamide and 4-methyl-6-methoxy-2-amino-1,3,5-triazine and the minor product acetyltriuret. In plants, hydroxylation occurs at the 5-position of the phenyl ring to yield 5- hydroxytriasulfuron as a primary metabolite which is a major metabolite from the plant microsomal system.
By mammals, orally administered triasulfuron is mainly excreted in the urine, and O-dealkylation of 2- chloroethoxy and 6-methoxy groups, and hydroxylation at the 5-position of the phenyl ring and at the 4-methyl group of the triazine ring are observed. By UV irradiation, 2-chloroethoxybenzene is interestingly identified with (4-methoxyl-6-methyl-1,3,5-triazine)urea, and, in sunlight, with these two products, 2-amino-4- methoxyl-6-methyltriazine and 2-(2- chloroethoxy)benzenesulfonamide are identified.