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Diuron

CAS Number
330-54-1
EC Number
206-114-9
Chemical Formula
C9H10Cl2N2O
Molecular Weight
233.09 g/mol

Description

Diuron (CAS 330-54-1 ), also sold under the trade name Karmex and referenced in research contexts as DCMU, is a substituted urea herbicide used for broad-spectrum weed and algae control. It functions by inhibiting photosynthesis in target plants, making it effective across both agricultural and industrial settings. In agriculture, it is applied as a pre- and post-emergent herbicide. It is used on crops such as cotton, sugarcane, and fruit orchards to suppress grassy and broadleaf weeds. Industrial and non-crop uses include total vegetation control on railways, roadsides, and industrial sites. This chemical is preferred where long-residual activity is required. In antifouling and preservation applications, it acts as a biocide in coatings for marine surfaces, textiles, and paper to inhibit growth. It is effective at stopping algal and microbial growth in these environments. Polymer and flame-retardant formulations also incorporate this substance as a functional additive for specialty material performance. The photosynthesis-inhibiting mechanism is leveraged for these specific industrial applications. The product is available as a wettable powder (WP), suspension concentrate (SC), and technical-grade solid. Standard agricultural formulations are supplied at 80% WP and 50% SC concentrations. Technical-grade material is the primary form sourced by formulators and industrial buyers producing downstream products. Contact us for supply of Diuron Request Quote

Other Names (Synonyms)

N'-(3,4-dichlorophenyl)-N,N-dimethylurea | N,N,-dimethyl-N'-(3,4-dichlorophenyl)urea | Karmex | 3-(3,4-Dichlorophenyl)-1,1-dimethylurea | 1,1-dimethyl-3-(3,4-dichlorophenyl)urea | 1-(3,4-dichlorophenyl)-3,3-dimethylurea | Direx | DCMU

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point158-159 °C
Boiling Point180-190°C
Density1.1786 g/cm³
Flash Point180-190°C
Appearancesolid
ColorWhite, odorless crystalline solid
Formneat
Water SolubilitySlightly soluble. 0.0042 g/100 mL
Vapor Pressure2(x 10 -7 mmHg) at 30 °C (Hawley, 1981)
Refractive Index1.5500 (estimate)
Log P2.84-2.89 at 20℃ and pH4.03-9

Safety & Handling

Danger
GHS08· Health HazardGHS09· EnvironmentGHS07· Irritant

Hazard Statements

H302Harmful if swallowed
H303May be harmful if swallowed
H316Causes mild skin irritation
H320Causes eye irritation
H335May cause respiratory irritation
H350May cause cancer
H351Suspected of causing cancer
H372Causes damage to organs through prolonged or repeated exposure
H373May causes damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary Statements

P203Obtain, consult and follow expert instructions for use.
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P271Use only outdoors or in a well-ventilated area.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P318IF exposed or concerned, get medical advice.
P319Get medical advice/attention if you feel unwell.
P330Rinse mouth.
P391Collect spillage.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P317Get emergency medical help.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P233Store in a well-ventilated place. Keep container tightly closed.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29242990
UN Number3077
ADR Class9
Packing GroupIII
Storage Class11 - Combustible Solids
WGK (Germany)3