METOXURON Chemical Properties

Melting point:

124-127 °C

Boiling point:

391.6±42.0 °C(Predicted)

Density 

1.3100 (rough estimate)

refractive index 

1.5500 (estimate)

Flash point:

2 °C

storage temp. 

APPROX 4°C

solubility 

Chloroform (Slightly), DMSO (Slightly)

pka

13.83±0.70(Predicted)

form 

Solid

color 

White to Off-White

Water Solubility 

678mg/L(23 ºC)

EPA Substance Registry System

Metoxuron (19937-59-8)

Safety Information

Hazard Codes 

N,Xn,F

Risk Statements 

50/53-36-20/21/22-11

Safety Statements 

60-61-36-26-16-36/37

RIDADR 

UN3077 9/PG 3

RTECS 

YS5775000

Toxicity

mouse,LD50,oral,2542mg/kg (2542mg/kg),ENDOCRINE: OTHER CHANGESBLOOD: OTHER CHANGES,Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 47(2), Pg. 13, 1982.

METOXURON Usage And Synthesis

Uses

Metoxuron is used as a herbicide.

Definition

ChEBI: Metoxuron is a member of the class of 3-(3,4-substituted-phenyl)-1,1-dimethylureas that is urea in which one of the nitrogens is substituted by a 3-chloro-4-methoxyphenyl group while the other is substituted by two methyl groups. It is a plant growth regulator and a pre- and post-emergence herbicide used for the control of grasses and broad-leaved weeds in carrots and cereals (e.g. wheat, barley and rye). It has a role as an agrochemical, an environmental contaminant, a herbicide, a xenobiotic, a photosystem-II inhibitor and a plant growth regulator. It is a 3-(3,4-substituted-phenyl)-1,1-dimethylurea, a monomethoxybenzene and a member of monochlorobenzenes.

Metabolic pathway

Photodegradation of metoxuron with UV irradiation in the presence of UV-H2O2 and -TiO2 primarily proceeds with the replacement of the chlorine atom with the hydroxy group and the attack of OH radicals at the 6-position on the phenyl ring. The principal photoproducts identified are 3-(4-methoxy-2,5- paraquinone)-1,1-dimethylurea, hydroxymetoxuron, 3-(3-hydroxy-4-methoxyphenyl)-1,1-dimethylurea, 3-(3-chloro-4-hydroxyphenyl)-1,1-dimethylurea, and 3-(3-chloro-4-methoxyphenyl)-1,1dimethylurea.

METOXURON(19937-59-8)Related Product Information

• 1,1-DIMETHYLUREA
• Phenylurea
• METOXURON SOLUTION 100UG/ML IN ACETONITRILE 1ML
• METOXURON SOLUTION 100UG/ML IN TOLUENE 1ML
• METOXURON SOLUTION 100 NG/MYL IN
• METOXURON-MONOMETHYL
• 3-Chloro-4-methoxyaniline
• 4-METHOXYPHENYLUREA
• METOXURON
• 1-(4-METHOXYPHENYL)-3-METHYLUREA
• METOXURON-MONOMETHYL