Monolinuron Chemical Properties

Melting point:

81.5℃

Density 

1.3575 (rough estimate)

refractive index 

1.5790 (estimate)

Flash point:

100 °C

storage temp. 

Sealed in dry,Room Temperature

pka

12.80±0.70(Predicted)

color 

White to Light yellow to Light orange

Water Solubility 

0.58g/L(room temperature)

BRN 

2212523

InChI

InChI=1S/C9H11ClN2O2/c1-12(14-2)9(13)11-8-5-3-7(10)4-6-8/h3-6H,1-2H3,(H,11,13)

InChIKey

LKJPSUCKSLORMF-UHFFFAOYSA-N

SMILES

N(OC)(C)C(NC1=CC=C(Cl)C=C1)=O

EPA Substance Registry System

Monolinuron (1746-81-2)

Safety Information

Hazard Codes 

Xn,N

Risk Statements 

22-48/22-50/53

Safety Statements 

22-60-61

RIDADR 

UN 3077 9/PG 3

WGK Germany 

3

RTECS 

YS6425000

HS Code 

29280000

Hazardous Substances Data

1746-81-2(Hazardous Substances Data)

Monolinuron Usage And Synthesis

Definition

ChEBI: Monolinuron is a member of ureas.

Reactions

Nitrite or nitrate induced-photolysis of monolinuron (a phenyl urea herbicide) using the 300–450 nm light excitation gives rise to various photo-products. The direct photolysis of monolinuron proceeds via two main pathways yielding, respectively, 3-(4-chlorophenyl)-1-methylurea, which results from demethoxylation of the N-terminus substituted functional group and 3-(4-hydroxyphenyl)-1-methoxy-1-  methylurea obtained by photohydrolysis of the C-Cl bond[1].
Degradation pathways of monolinuron by direct and nitrite (or nitrate) induced photolysis. Specific photoproducts: circled numbers (direct); underlined numbers (induced):

Safety Profile

Moderately toxic by ingestion. Experimental teratogenic and reproductive effects. When heated to decomposition it emits very toxic fumes of Cland NOx.

References

[1] S. Nélieu. “Nitrite and nitrate induced photodegradation of monolinuron in aqueous solution.” Environmental Chemistry Letters 2 2 (2004): 83–87.

Monolinuron(1746-81-2)Related Product Information

• Monolinuron
• Linuron
• 1-(4-CHLOROBENZYL)-3-(3,4-DICHLOROPHENYL)-1-METHOXYUREA
• CHANDOR
• 2-[4-(4-CHLOROPHENYL)-2-METHYL-3-OXO-1,2,4-OXADIAZOLAN-5-YL]-N-(4-METHYLBENZYL)ACETAMIDE
• Dihydro-4-(3,4-dichlorophenyl)-2-methyl-2H-1,2,4-oxadiazine-3,6-dione
• N'-(4-CHLOROPHENYL)-N-METHOXY-N-[(METHOXYIMINO)METHYL]UREA
• 2-[4-(4-CHLOROPHENYL)-2-METHYL-3-OXO-1,2,4-OXADIAZOLAN-5-YL]ACETIC ACID
• 2-[4-(4-CHLOROPHENYL)-2-METHYL-3-OXO-1,2,4-OXADIAZOLAN-5-YL]-N-(4-METHOXYPHENYL)ACETAMIDE
• 2-[4-(4-CHLOROPHENYL)-2-METHYL-3-OXO-1,2,4-OXADIAZOLAN-5-YL]-N-(4-FLUOROBENZYL)ACETAMIDE
• ETHYL 2-[4-(2,4-DICHLOROPHENYL)-2-METHYL-3-OXO-1,2,4-OXADIAZOLAN-5-YL]ACETATE
• N'-(4-CHLOROPHENYL)-N-[(2,6-DICHLOROBENZYL)OXY]-N-(([(2,6-DICHLOROBENZYL)OXY]IMINO)METHYL)UREA
• 2-[4-(4-CHLOROPHENYL)-2-METHYL-3-OXO-1,2,4-OXADIAZOLAN-5-YL]-N-CYCLOHEPTYLACETAMIDE
• 2-[4-(4-CHLOROPHENYL)-2-METHYL-3-OXO-1,2,4-OXADIAZOLAN-5-YL]-N-(2-PYRIDINYL)ACETAMIDE
• 2-[4-(4-CHLOROPHENYL)-2-METHYL-3-OXO-1,2,4-OXADIAZOLAN-5-YL]-N-(5-METHYL-3-ISOXAZOLYL)ACETAMIDE
• 2-[4-(4-CHLOROPHENYL)-2-METHYL-3-OXO-1,2,4-OXADIAZOLAN-5-YL]-N-(2-METHYL-4-NITROPHENYL)ACETAMIDE
• N-(4-BROMOPHENYL)-2-[4-(4-CHLOROPHENYL)-2-METHYL-3-OXO-1,2,4-OXADIAZOLAN-5-YL]ACETAMIDE
• N-(4-CHLOROPHENYL)-3A,11C-DIHYDRO-3H-BENZO[5,6]CHROMENO[4,3-C]ISOXAZOLE-1(4H)-CARBOXAMIDE