DCMU

DCMU

Names
Preferred IUPAC name N′-(3,4-Dichlorophenyl)-N,N-dimethylurea
Other names 3-(3,4-Dichlorophenyl)-1,1-dimethylurea, Karmex, Diuron, Direx
Identifiers
CAS Number	330-54-1 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:116509 Y
ChEMBL	ChEMBL278489 Y
ChemSpider	3008 Y
ECHA InfoCard	100.005.778
EC Number	206-354-4
KEGG	C18428 Y
PubChem CID	3120
RTECS number	YS8925000
UNII	9I3SDS92WY
UN number	3077, 2767
CompTox Dashboard (EPA)	DTXSID0020446
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) Y Key: XMTQQYYKAHVGBJ-UHFFFAOYSA-N Y
SMILES Clc1ccc(NC(=O)N(C)C)cc1Cl
Properties
Chemical formula	C9H10Cl2N2O
Molar mass	233.09 g·mol−1
Appearance	white crystalline solid[1]
Density	1.48 g/cm3
Melting point	158 °C (316 °F; 431 K)
Boiling point	180 °C (356 °F; 453 K)
Solubility in water	42 mg/L
Vapor pressure	0.000000002 mmHg (20°C)[1]
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H351, H373, H410
Precautionary statements	P201, P202, P260, P264, P270, P273, P281, P301+P312, P308+P313, P314, P330, P391, P405, P501
Flash point	noncombustible[1]
NIOSH (US health exposure limits):
PEL (Permissible)	none[1]
REL (Recommended)	TWA 10 mg/m3[1]
IDLH (Immediate danger)	N.D.[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

DCMU (3-(3,4-dichlorophenyl)-1,1-dimethylurea) is an algicide and herbicide of the aryl urea class that inhibits photosynthesis. It was introduced by Bayer in 1954 under the trade name of Diuron.