1746-81-2

Basic information

• Product Name: MONOLINURON
• Synonyms: 3-(4-CHLOROPHENYL)-1-METHOXY-1-METHYLUREA;3-(p-Chlorophenyl)-1-methoxy-1-methyl urea;ARRESIN;ARESIN;MONOLINURON;3-(4-Chlorphenyl)-1-methoxy-1-methylharnstoff;3-(p-chlorophenyl)-1-methoxy-1-methyl-ure;Afesin
• CAS NO: 1746-81-2
• Molecular Formula: C₉H₁₁ClN₂O₂
• Molecular Weight: 214.65
• EINECS: 217-129-5
• Product Categories: Alpha sort;Herbicides;H-MAlphabetic;M;METI - MZPesticides&Metabolites;Pesticides&Metabolites;Urea structure
• Mol File: 1746-81-2.mol

Chemical Properties

• Melting Point: 81.5℃
• Flash Point: 100 °C
• Appearance: /
• Density: 1.3575 (rough estimate)
• Refractive Index: 1.5790 (estimate)
• Storage Temp.: 0-6°C
• PKA: 12.80±0.70(Predicted)
• Water Solubility: 0.58g/L(room temperature)
• BRN: 2212523
• CAS DataBase Reference: MONOLINURON(CAS DataBase Reference)
• NIST Chemistry Reference: MONOLINURON(1746-81-2)
• EPA Substance Registry System: MONOLINURON(1746-81-2)

Safety Data

• Hazard Codes: Xn,N
• Statements: 22-48/22-50/53
• Safety Statements: 22-60-61
• RIDADR: UN 3077 9/PG 3
• WGK Germany: 3
• RTECS: YS6425000
• Hazardous Substances Data: 1746-81-2(Hazardous Substances Data)

Usage

Safety Profile

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

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

Upstream product

• 28443-49-4 1-(p-chlorophenyl)-3-methoxyurea 
• 77-78-1 dimethyl sulfate 
• 30085-34-8 N-(4-chlorophenyl)-N'-hydroxyurea 
• 6638-79-5 N,O-dimethylhydroxylamine*hydrochloride 
• 186353-04-8 chloromethyl N-(4-chlorophenyl) carbamate 
• 106-47-8 4-chloro-aniline 
• 104-12-1 p-chlorphenylisocyanate 

Downstream Products

• 74-89-5 methylamine 

Relevant articles and documents

Preparation method of monolinuron

The invention belongs to the field of pesticide synthesis technology, and particularly relates to a preparation method of monolinuron. A monolinuron product is prepared through a one-step reaction ina polar solvent by analyzing the structure of monolinuron and the steric hindrance of chemical synthesis, and using cheap and easily available p-chlorophenyl isocyanate and dimethylhydroxylamine hydrochloride as main raw materials. The product purity reaches 98% or more than 98%, and the product yield is close to 80%, therefore, the technical problems of complicated process, multiple by-products and environmental pollution existing in the preparation technology of monolinuron in the prior art are solved.

Halopyridyl triazolinone herbicides and herbicidal use thereof

Disclosed are herbicidal halopyridyl triazolinones, herbicidal compositions comprising the halopyridyl triazolinones, and herbicidal use of the compounds and compositions. Such compounds and compositions are useful as both preemergence and postemergence herbicides in a variety of crops.

Herbicidal composition for upland farming and weeding method

A herbicidal composition for upland farming which can control weeds that have been difficult to control, for example, cleavers, chickweed, birdseye speedwell and violet, said composition containing as active ingredients a 3-substituted phenylpyrazole derivative represented by the general formula (I): STR1 (wherein R is a hydrogen atom, a C1-6 alkyl group, a C3-6 cycloalkyl group, a C1-6 haloalkyl group, a C2-6 alkenyl group or a C2-6 alkynyl group, R1 is a C1-6 alkyl group, X1 and X2, which may be the same or different, are halogen atoms, and Y is an oxygen atom or a sulfur atom) and at least one compound selected from the group consisting of sulfonylurea derivatives, phenylurea derivatives and phenoxy fatty acid derivatives; and a weeding method using said composition.

α-Haloalkyl Haloformates and Related Compounds 3.1 A Facile Synthesis of Symmetrical and Unsymmetrical Ureas via Chloromethyl Carbamates

Chloromethyl carbamates were prepared by the reaction of chloromethyl chloroformates with amines and found to produce mono-, symmetrically or unsymmetrically di- and trisubstituted ureas including their N-hydroxy and N-alkoxy derivatives in moderate to good yield.

Composition for defoliating plants

New compositions for defoliating plants possessed of synergistic activity comprising (A) a compound of formula I STR1 in which R1 is hydrogen or C1 -C4 -alkyl, R2 is hydrogen, C1 -C4 -alkyl, C1 -C4 -alkoxy or C1 -C4 -alkylthio, R3 is hydrogen, C1 -C4 -alkyl, C1 -C4 -alkoxy, C1 -C4 -alkylthio or C3 -C8 -cycloalkyl, wherein R2 and R3 taken together with the nitrogen atom to which they are attached is a morpholino- piperidino- or pyrrolidino-group, X is oxygen or sulfur, Y can be the same or different and is hydrogen, halogen, C1 -C4 -alkyl, C1 -C4 -alkoxy, C1 -C4 -alkoxy-C1 -C2 -alkyl, C1 -C4 -alkylthio, trifluoromethyl or nitro, and n is the number 1, 2, 3, 4 or 5, in combination with (B) a defoliant for plants in a proportion of 1 to 99 parts by weight of component (A) to 99 to 1 parts by weight of component (B). As the defoliant there can be employed 1,2,3-thiadiazole-5-yl-urea derivatives, 1,2,3-thiadiazole-5-carboxylic acid derivatives, benzylaminopurine derivatives, 2,3-dihydro-5,6-dimethyl-1,4-dithiine-1,1,4,4-tetroxide, 1,1'-dimethyl-4,4'-bipyridilium-dichloride, sodium chlorate and S,S,S-tributylphosphortrithioate. The compositions of the invention are especially suitable for use in the defoliation of cotton plants.

5,6-Dihydro-1,2,4,6-thiatriazin-5-one-1,1-dioxides

5,6-Dihydro-1,2,4,6-thiatriazin-5-one-1,1-dioxides of the formula STR1 where R1 is hydrogen, a metal atom or an unsubstituted or substituted ammonium radical, R2 is a saturated or unsaturated straight-chain aliphatic radical of up to 10 carbon atoms, a cycloaliphatic radical or 3 to 7 carbon atoms, a branched saturated or unsaturated aliphatic radical of 3 to 10 carbon atoms, a halogen-, alkoxy- or alkylmercapto-substituted aliphatic radical of 2 to 10 carbon atoms tetrahydrofuryl substituted methyl, a cycloalkoxy-substituted aliphatic radical of 4 to 10 carbon atoms, unsubstituted or halogen-substituted benzyl or phenyl, halophenyl, or alkylphenyl of a total of up to 10 carbon atoms, R3 is hydrogen, a straight-chain aliphatic radical of up to 10 carbon atoms, a cycloaliphatic radical of 3 to 7 carbon atoms, a branched aliphatic radical of 3 to 10 carbon atoms, haloalkyl, or alkoxyalkyl of 2 to 10 carbon atoms and X is oxygen and may also be sulfur if R2 is unsubstituted or halogen-substituted benzyl, processes for their preparation, and herbicides containing the above compounds.

Micro granules for pesticides and process for their manufacture

The invention is concerned with micro granules for pesticides and their manufacture by wet grinding a suspension of the active compound together with adjuvants in a ball mill to a particle size of at most 0.01 mm and subsequent spray-drying of the suspension thus obtained under a pressure of from 5 to 8 atmospheres gauge and at 140° to 300° C.

4,5-Dichloroimidazole-2-carboxylic acid derivatives

4,5-Dichloroimidazole-2-carboxylic acid derivatives of the formula STR1 in which the group STR2 represents a carbon atom which has three bonds to hetero-atoms, and their salts with bases, possess insecticidal, acaricidal, fungicidal, nematicidal and herbicidal properties.