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Herbicides

Diuron

Also known as 3-(3,4-Dichlorophenyl)-1,1-dimethylurea, DCMU, Duran

CAS 330-54-1Formula C9H10Cl2N2OMolar mass 233.10 g/molEC 206-354-4
GHS signal word: Danger. Pictograms: Serious health hazard, Hazardous to the environment 211 suppliers listed
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Diuron chemical structure, C9H10Cl2N2O, CAS 330-54-1
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
White, crystalline solid
Melting point
158 to 159
Boiling point
180 to 190
Density
1.48
Solubility
In water, 42.0 mg/L at 25 °C
HS code
292421
Category
Herbicides
UN number
UN 3077
Illustrative photo, colourless crystals in small glass vials on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Diuron?

Plain description, key identifiers and synonyms

Diuron is a member of the class of 3-(3,4-substituted-phenyl)-1,1-dimethylureas that is urea in which both of the hydrogens attached to one nitrogen are substituted by methyl groups, and one of the hydrogens attached to the other nitrogen is substituted by a 3,4-dichlorophenyl group. It has a role as a urea herbicide, a mitochondrial respiratory-chain inhibitor, a photosystem-II inhibitor, a xenobiotic and an environmental contaminant. It is a 3-(3,4-substituted-phenyl)-1,1-dimethylurea and a dichlorobenzene.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3-(3,4-dichlorophenyl)-1,1-dimethylurea
CAS number
330-54-1 CAS number cross-checked
EC number
206-354-4
Molecular formula
C9H10Cl2N2O
UNII
9I3SDS92WY
MDL number
MFCD00018136
InChIKey
XMTQQYYKAHVGBJ-UHFFFAOYSA-N
InChI
InChI=1S/C9H10Cl2N2O/c1-13(2)9(14)12-6-3-4-7(10)8(11)5-6/h3-5H,1-2H3,(H,12,14)
SMILES (canonical and isomeric)
CN(C)C(=O)NC1=CC(=C(C=C1)Cl)Cl

Synonyms

  • 3-(3,4-Dichlorophenyl)-1,1-dimethylurea
  • DCMU
  • Duran
  • Dichlorfenidim
  • Karmex
  • Dynex
  • Vonduron
  • Dailon
  • Marmer
  • Karmex DW
  • Di-on
  • Urox D
  • Cekiuron
  • Crisuron
  • Lucenit
  • Unidron
  • 1,1-Dimethyl-3-(3,4-dichlorophenyl)urea
  • 1-(3,4-Dichlorophenyl)-3,3-dimethylurea
  • N'-(3,4-Dichlorophenyl)-N,N-dimethylurea
  • Diuron Nortox
  • Karmex D
  • Preventol A 6
  • Karmex Diuron Herbicide
  • Diuron 4L
  • Direx 4L
Show all 39 synonyms
  • Herburon
  • Anduron
  • Ansaron
  • Bioron
  • Dirurol
  • Drexel
  • Seduron
  • DP Hardener 95
  • Farmco diuron
  • Urea, N'-(3,4-dichlorophenyl)-N,N-dimethyl-
  • Telvar Diuron Weed Killer
  • Diuron 900
  • N-(3,4-Dichlorophenyl)-N',N'-dimethylurea
  • DCMU 99

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, crystalline solidexp.
Odour
Odorlessexp.
Melting point
158 to 159exp.
Boiling point
180 to 190exp.
Density
1.48exp.
Solubility
In water, 42.0 mg/L at 25 °Cexp.
Vapour pressure
VP: 6.90 × 10⁻⁸ mm Hg (9.2 × 10⁻³ mPa) at 25 °Cexp.

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
233.10 g/molcalc.
Exact mass
232.017 Dacalc.
LogP (octanol/water)
3.09calc.
Topological polar surface area
32.34 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
1calc.
Heavy atoms
14calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.22calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment
010NFPA 704 rating

Hazard statements

  • H350May cause cancer.
  • H373May cause damage to organs through prolonged or repeated exposure.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (9)
  • P203Obtain, read and follow all safety instructions before use.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P318If exposed or concerned, get medical advice.
  • P319Get medical help if you feel unwell.
  • 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 aid

Diuron suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 211 suppliers
30 of 30 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

211 suppliers in 27 countries

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Diuron 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

N'-(3,4-Dichlorophenyl)-N,N-dimethylurea, diuron is a broad-spectrum algicide, which acts by interrupting the photosynthetic electron transport in algae. The main applications are paints, coatings and plasters. In practice, dry-film preservatives contain a combination of algicides and fungicides, such as diuron, carbendazim and OIT (2-n-octylisothiazol-3-one), or diuron, zinc pyrithione and OIT.

Systemic herbicide. Total control of weeds and mosses on non-crop areas. Selective control of germinating grass and broad-leaved weeds in many crops, including asparagus, tree fruit, bush fruit, citrus fruit, vines, olives, pineapples, bananas, sugar cane, cotton, peppermint, alfalfa, forage legumes, cereals, maize, sorghum, and perennial grass-seed crops.

Pre-emergence herbicide, sugar cane flowering suppressant.

Industrial uses: Catalyst.

Consumer uses: Preservative.

Use classes: Herbicides, Pesticides.

Pharmacological actions

  • Herbicides

Roles

  • electron-transport chain inhibitor
  • environmental contaminant
  • enzyme inhibitor
  • herbicide
  • mitochondrial respiratory-chain inhibitor
  • pathway inhibitor
  • pesticide
  • photosynthetic electron-transport chain inhibitor
  • photosystem-II inhibitor
  • respiratory-chain inhibitor
  • urea herbicide
  • xenobiotic

Functional uses

  • Biocide

How it is made

Diuron is produced by reaction of 3,4-dichlorophenyl isocyanate with dimethylamine.

Prepared by the reaction of an appropriate mono- or dihalo-substituted phenyl isocyanate with dimethyl or methylethyl amine. ... The amine-isocyanate reaction is most readily carried out in the presence of an inert solvent, such as toluene, anisole, benzene, chlorobenzene, or dioxane. No catalyst is needed, and since the reaction is exothermic it is ordinarily unnecessary to supply heat. ...

Read more

The reaction is conveniently carried out by first mixing the isocyanate with the inert solvent at room temperature to increase through the range of 25 to 75 °C. The tri-substituted urea products are generally quite insoluble in the solvent used and, therefore, precipitate out as formed and are readily separated from the reaction mass.

Preparation: Jones, United States of America patent 2768971 (1956 to I.C.I.)

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 006-015-00-9

Health and food

  • EU Cosmetics Regulation Annex II, prohibited in cosmetics
    Name: Diuron (ISO), Ref no: 1058, Annex ref: II/1058

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 Diuron is traded under.

HS 2924.21Indicative HS code

Ureines and their derivatives, salts thereof

World exports in 2024
$149M
+12.5% vs 2023, imports $208M
2019 to 2024
Top exporters
  1. Germany25.4%
  2. China14.4%
  3. Israel12.0%
Top importers
  1. Brazil28.2%
  2. United States14.0%
  3. Japan10.0%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Diuron is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Diuron, based on the data on this page

What is Diuron?

Diuron is a member of the class of 3-(3,4-substituted-phenyl)-1,1-dimethylureas that is urea in which both of the hydrogens attached to one nitrogen are substituted by methyl groups, and one of the hydrogens attached to the other nitrogen is substituted by a 3,4-dichlorophenyl group.

What is the CAS number of Diuron?

The CAS registry number of Diuron is 330-54-1.

What is the molecular formula and weight of Diuron?

The molecular formula of Diuron is C9H10Cl2N2O and its molar mass is 233.10 g/mol.

What is Diuron used for?

N'-(3,4-Dichlorophenyl)-N,N-dimethylurea, diuron is a broad-spectrum algicide, which acts by interrupting the photosynthetic electron transport in algae. The main applications are paints, coatings and plasters.

Is Diuron hazardous?

Diuron carries the GHS signal word "Danger". Main hazards: may cause cancer, may cause damage to organs through prolonged or repeated exposure, very toxic to aquatic life. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Diuron?

Diuron is usually classified under HS code 292421 (Ureines and their derivatives, salts thereof). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Diuron?

CompoundList lists 211 suppliers of Diuron in China, Brazil, United States, India and 23 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Diuron in India?

7 suppliers in India list Diuron on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Diuron?

Suppliers quote Diuron on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Diuron

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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