莫纽隆;1,1-二甲基-3-(对氯苯基)脲

Description

Monuron;1,1-Dimethyl-3-(p-chlorophenyl)urea · CAS 150-68-5 · C9H11ClN2O. UNII I99GAK5X1D. Melting Point: 338.9 to 340.7 °F (NTP, 1992); Melting Point: 170.5-171.5 °C; Density: 1.27 @ 20 °C/20 °C.

Identification

CAS Registry Number	150-68-5
PubChem CID	8800
Molecular formula	C9H11ClN2O
IUPAC name	3-(4-chlorophenyl)-1,1-dimethylurea
UNII (FDA)	I99GAK5X1D

Computed Descriptors

Molecular Weight	198.65
XLogP3	1.9
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	1
Rotatable Bond Count	1
Exact Mass	198.0559907
Monoisotopic Mass	198.0559907
Topological Polar Surface Area	32.3
Heavy Atom Count	13
Formal Charge	0

Physical & Chemical Properties

Melting Point	338.9 to 340.7 °F (NTP, 1992)
Melting Point	170.5-171.5 °C
Density	1.27 @ 20 °C/20 °C
Vapor Pressure	0.0000005 [mmHg]
Vapor Pressure	0.067 mPa @ 25 °C
LogP	2.01
Other Experimental Properties	DECOMP @ 185-200 °C

Physical description & handling notes

• Monuron appears as white crystalline solid or white powder with a slight odor. Melting point 175 °C. Moderately toxic by ingestion. Used as an herbicide.
• White solid; [CAMEO]
• WHITE PLATES FROM METHANOL
• THIN RECTANGULAR PRISMS FROM METHANOL
• Platelets
• SLIGHT ODOR

GHS Hazard Classification

Reported hazard statements	H302, H351, H400, H410, H341, H373

Documented Uses

• Used as a herbicide on roadways, industrial lots, and drainage ditches; [HSDB] No ACTIVE registrants found for selected chemical. [NPIRS]
• As of July 1973, monuron is no longer registered for use on agricultural crops. [HSDB]
• 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/
• ... Sugarcane flowering suppressant.
• REACTION OF P-CHLOROPHENYL ISOCYANATE WITH DIMETHYLAMINE

Synonyms

MONURON; 150-68-5; 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

Frequently Asked Questions

What are the CAS number and molecular formula of Monuron;1,1-Dimethyl-3-(p-chlorophenyl)urea?

CAS 150-68-5; molecular formula C9H11ClN2O; molecular weight — g/mol.

What other names is Monuron;1,1-Dimethyl-3-(p-chlorophenyl)urea known by?

MONURON, 150-68-5, 3-(4-Chlorophenyl)-1,1-dimethylurea, Chlorfenidim, Lirobetarex, Monuruon.

Is Monuron;1,1-Dimethyl-3-(p-chlorophenyl)urea classified as hazardous?

Hazard statements reported: H302, H351, H400, H410, H341.

What are the key physical properties of Monuron;1,1-Dimethyl-3-(p-chlorophenyl)urea?

Melting Point: 338.9 to 340.7 °F (NTP, 1992); Melting Point: 170.5-171.5 °C; Density: 1.27 @ 20 °C/20 °C; Vapor Pressure: 0.0000005 [mmHg].

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.