Agrochemicals
REACH
Diuron
CAS Number
330-54-1
EC Number
206-114-9
Abbreviation
DCMU
What is Diuron?
Diuron (CAS 330-54-1), also sold as Karmex and referenced as DCMU, is a substituted urea herbicide for broad-spectrum weed and algae control.
Where is Diuron used?
- Agriculture: pre- and post-emergent herbicide on cotton, sugarcane and fruit orchards to suppress grassy and broadleaf weeds
- Industrial and non-crop: total vegetation control on railways, roadsides and industrial sites
- Antifouling and preservation: biocide in coatings for marine surfaces, textiles and paper
- Polymer and flame-retardant formulations: functional additive
- It inhibits photosynthesis in target plants.
Good to know: Preferred where long-residual activity is required.
Commercial specifications
- Standard agricultural formulations: 80% WP and 50% SC
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
What are the physical properties of Diuron?
Melting Point 158-159 °C
Boiling Point 180-190°C
Density 1.1786 g/cm³
Flash Point 180-190°C
Appearance solid
Color White, odorless crystalline solid
Form neat
Water Solubility Slightly soluble. 0.0042 g/100 mL
Vapor Pressure 2(x 10 -7 mmHg) at 30 °C (Hawley, 1981)
Refractive Index 1.5500 (estimate)
Log P 2.84-2.89 at 20℃ and pH4.03-9
How is Diuron classified and handled safely? Learn More
Danger
GHS08· Health Hazard GHS09· Environmental Hazard GHS07· Irritant
Hazard Statements
H302 Harmful if swallowed
H303 May be harmful if swallowed
H316 Causes mild skin irritation
H320 Causes eye irritation
Precautionary Statements
P203 Obtain, consult and follow expert instructions for use.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
Which trade and regulatory codes apply to Diuron?
HS Code 29242990
UN Number 3077
ADR Class 9
Packing Group III
Storage Class 11 - Combustible Solids
WGK (Germany) 3