Monuron
Also known as 3-(4-Chlorophenyl)-1,1-dimethylurea, Chlorfenidim, Lirobetarex
Key facts
What buyers check first
- Appearance
- White plates from methanol
- Melting point
- 170.5 to 171.5
- Boiling point
- 185 to 200
- Density
- 1.27 @ 20 °C/20 °C
- Solubility
- Monuron-TCA is a crystalline solid, mp 78-81 °C. Solubility (room temperature): 918 mg/l…
- HS code
- 292421
- Category
- Herbicides
- UN number
- UN 3077
What is Monuron?
Plain description, key identifiers and synonyms
Monuron 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 p-chlorophenyl group while the other is substituted by two methyl groups. It has a role as a herbicide, a xenobiotic and an environmental contaminant. It is a 3-(3,4-substituted-phenyl)-1,1-dimethylurea and a member of monochlorobenzenes.
Identifiers
Registry numbers, names and line notations, tap to copy
- IUPAC name
- 3-(4-chlorophenyl)-1,1-dimethylurea
- CAS number
- 150-68-5 CAS number cross-checked
- EC number
- 205-766-1
- Molecular formula
- C9H11ClN2O
- UNII
- I99GAK5X1D
- MDL number
- MFCD00018556
- InChIKey
- BMLIZLVNXIYGCK-UHFFFAOYSA-N
- InChI
- InChI=1S/C9H11ClN2O/c1-12(2)9(13)11-8-5-3-7(10)4-6-8/h3-6H,1-2H3,(H,11,13)
- SMILES (canonical and isomeric)
- CN(C)C(=O)NC1=CC=C(C=C1)Cl
Synonyms
- 3-(4-Chlorophenyl)-1,1-dimethylurea
- Chlorfenidim
- Lirobetarex
- Monuruon
- Monurex
- Telvar
- Monuuron
- Monurox
- Herbicides, monuron
- 1-(4-Chlorophenyl)-3,3-dimethylurea
- Usaf p-8
- 3-(p-Chlorophenyl)-1,1-dimethylurea
- Usaf xr-41
- N'-(4-Chlorophenyl)-N,N-dimethylurea
- Karmex monuron herbicide
- Monuroun
- 1,1-Dimethyl-3-(p-chlorophenyl)urea
- Chlorea
- Rosuran
- Telvar Monuron Weedkiller
- CMU Weedkiller
- Karmex W
- Karmex W. monuron herbicide
- CNV Weed Killer
- Telvar W. monuron weedkiller
Show all 39 synonymsShow fewer synonyms
- N,N-Dimethyl-N'-(4-chlorophenyl)urea
- Urea, 3-(p-chlorophenyl)-1,1-dimethyl-
- Urea, N'-(4-chlorophenyl)-N,N-dimethyl-
- N-Dimethyl-N'-(4-chlorophenyl)urea
- 1-(p-Chlorophenyl)-3,3-dimethylurea
- N-(p-Chlorophenyl)-N',N'-dimethylurea
- N-(4-Chlorophenyl)-N',N'-dimethylurea
- 1-(4-Chloro phenyl)-3,3-dimethyluree
- 3-(4-Chloor-fenyl)-1,1-dimethylureum
- 3-(4-Chlor-phenyl)-1,1-dimethyl-harnstoff
- 1-para-Chlorophenyl-3,3-dimethylurea
- 3-para-Chlorophenyl-1,1-dimethylurea
- 3-(4-cloro-fenil)-1,1-dimetil-urea
- N-para-Chlorophenyl-N',N'-dimethylurea
Physical and chemical properties
Measured values and descriptors computed from the structure
Physical and chemical properties
Measured values, check the supplier specification for your grade
| Appearance | White plates from methanolexp.Measured value |
|---|---|
| Odour | SLIGHT ODORexp.Measured value |
| Melting point | 170.5 to 171.5exp.Measured value |
| Boiling point | 185 to 200exp.Measured value |
| Density | 1.27 @ 20 °C/20 °Cexp.Measured value |
| Solubility | Monuron-TCA is a crystalline solid, mp 78-81 °C. Solubility (room temperature): 918 mg/l water, 400 g/kg 1,2-dichloroethane, 177 g/kg methanol, 91 g/kg xylene.exp.Measured value |
| Vapour pressure | 0.067 mPa @ 25 °Cexp.Measured value |
Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.
Computed descriptors
Calculated from the structure, useful for screening and formulation
| Molecular weight | 198.65 g/molcalc.Computed value |
|---|---|
| Exact mass | 198.056 Dacalc.Computed value |
| LogP (octanol/water) | 2.43calc.Computed value |
| Topological polar surface area | 32.34 Ųcalc.Computed value |
| Hydrogen bond donors | 1calc.Computed value |
| Hydrogen bond acceptors | 1calc.Computed value |
| Rotatable bonds | 1calc.Computed value |
| Heavy atoms | 13calc.Computed value |
| Rings | 1calc.Computed value |
| Aromatic rings | 1calc.Computed value |
| Fraction sp3 carbons | 0.22calc.Computed value |
| Formal charge | 0calc.Computed value |
| Stereocentres | 0calc.Computed value |
| Lipinski rule of five | Passes (0 violations)calc.Computed value |
Calculated for screening. Confirm critical figures with the supplier.
Murcko scaffold
The ring system that remains when every side chain is removed
Safety and hazards
GHS classification summary, not a safety data sheet
Hazard statements
- H302Harmful if swallowed.
- H351Suspected of causing cancer.
- H400Very toxic to aquatic life.
- H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (11)
- P203Obtain, read and follow all safety instructions before use.
- P264Wash skin thoroughly after handling.
- P270Do not eat, drink or smoke when using this product.
- P273Avoid release to the environment.
- P280Wear protective gloves, protective clothing, eye protection and face protection.
- P301 + P317If swallowed: Get medical help.
- P318If exposed or concerned, get medical advice.
- P330Rinse mouth.
- P391Collect spillage.
- P405Store locked up.
- P501Dispose of contents and container in accordance with local regulations.
- UN number
- UN 3077
GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.
Full safety data and first aidMonuron suppliers
Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings
- Price on request
- Singapore, SingaporeUnclaimed profileMonuronGrade, purity and minimum order on requestPrice on request
- Price on request
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Where suppliers are based
3 suppliers in 2 countries
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Monuron price
Indicative price range per kg from live supplier offers
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Uses and applications
What the substance is used for, by industry and function
The active ingredient is no longer contained in any registered pesticide products ... "cancelled.".
The only known use of monuron is as a broad-spectrum herbicide for the control of many grasses and herbaceous weeds on non-cropland areas, such as right-of-way, industrial sites and drainage ditch banks.
As a soil sterilant monuron is preferred on medium to heavy soils and under intermediate rainfall conditions. At sterilant dosages it controls a wide range of annual and perennial grasses and broadleaf weeds on noncrop areas. (Former use).
A plant growth regulator.
Sugarcane flowering suppressant.
Use classes: Herbicides.
Industries and functions
Roles
- environmental contaminant
- herbicide
- pesticide
- xenobiotic
Functional uses
- Biocide
- Catalyst
- Chemical reaction regulator
How it is made
Reaction of p-chlorophenyl isocyanate with dimethylamine
Prepd by reacting p-chlorophenyl isocyanate with dimethylamine
P-Chloroaniline in dioxane or another inert solvent with anhydrous hydrogen chloride and phosgene at 70-75 °C forms p-chlorophenyl isocyanate, which at 25 °C with dimethylamine gives monuron.
Regulatory status
Inventories, regulations and trade controls that list this substance
Europe
- EU harmonised classification (CLP Annex VI)Index no: 006-042-00-6
Health and food
- EU Cosmetics Regulation Annex II, prohibited in cosmeticsName: Monuron, Ref no: 1025, Annex ref: II/1025
United States
- TSCA inventory (USA)Status: Active in US commerce
HS code and trade data
Customs classification and reported world trade statistics
Global trade
World import and export statistics for the HS code Monuron is traded under.
Ureines and their derivatives, salts thereof
The HS code shown for Monuron is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.
Related chemicals
Parent and salt forms, stereoisomers, similar structures and isomers
Stereoisomers and isotopic forms
Same connectivity, different stereochemistry or isotopes (same InChIKey skeleton)
Similar structures
Nearest neighbours by Morgan fingerprint Tanimoto similarity
Same formula isomers
Different compounds that share this molecular formula
![N-[(6-Chloropyridin-3-yl)methyl]-N-methylacetamide chemical structure, C9H11ClN2O, CAS 864628-19-3](/s/FFKDBDOYQUWIEU-UHFFFAOYSA-N.svg)
Frequently asked questions
Quick answers about Monuron, based on the data on this page
What is Monuron?
What is the CAS number of Monuron?
What is the molecular formula and weight of Monuron?
What is Monuron used for?
Is Monuron hazardous?
What is the HS code of Monuron?
Where can I buy Monuron?
What is the price of Monuron?
Guides for buyers
Practical guides that help when you source, ship or handle Monuron
- Guide, SafetyHow to read a safety data sheet in 10 minutesA section by section method to pull the essentials out of any 16 section SDS: identity, hazards, composition, storage, PPE, properties, transport and emergency measures.Read
- Guide, Trade and logisticsShipping dangerous goods: UN numbers, classes and packing groupsHow the UN dangerous goods system works for chemicals, from the nine classes and UN numbers to packing groups, UN packaging marks, labels, documents and segregation.Read
- Guide, SafetyGHS pictograms, signal words and hazard statements explainedA practical guide to the nine GHS pictograms, the signal words Danger and Warning, H and P statements, and how to read a chemical label in seconds.Read
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