Isoproturon

Description

Isoproturon · CAS 34123-59-6 · C12H18N2O. UNII 66066K098P. Melting Point: 158 °C; Flash Point: 100 °C (212 °F) - closed cup; Solubility: In water, 65 mg/L at 22 °C.

Identification

CAS Registry Number	34123-59-6
PubChem CID	36679
Molecular formula	C12H18N2O
IUPAC name	1,1-dimethyl-3-(4-propan-2-ylphenyl)urea
UNII (FDA)	66066K098P

Computed Descriptors

Molecular Weight	206.28
XLogP3	2.9
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	1
Rotatable Bond Count	2
Exact Mass	206.141913202
Monoisotopic Mass	206.141913202
Topological Polar Surface Area	32.3
Heavy Atom Count	15
Formal Charge	0

Physical & Chemical Properties

Melting Point	158 °C
Flash Point	100 °C (212 °F) - closed cup
Solubility	In water, 65 mg/L at 22 °C
Solubility	In water, 70 mg/L at 20 °C
Density	1.2 at 20 °C
Vapor Pressure	9.1X10-3 mPa /2.47X10-8 mm Hg/ at 25 °C
LogP	log Kow = 2.87
LogP	2.87
Ionization Efficiency	3.29
Ionization Efficiency	2.7

Physical description & handling notes

• Colorless crystals
• White crystals from benzene
• MP: 153-165 °C /Technical isoproturon/
• In methanol 75, dichloromethane 63, acetone 38, benzene 5, xylol 4, n-hexane approximately 0.2 (all in g/L at 20 °C)
• Stable under recommended storage conditions.
• When heated to decomposition it emits toxic vapors of /nitrogen oxides/.

GHS Hazard Classification

Reported hazard statements	H351, H373, H400, H410, H332 (16.7%)

Documented Uses

• Pre- and post-emergence herbicide for control of annual grasses and broad-leaved weeds.
• Isoproturon is produced by reaction of 4-isopropylphenyl isocyanate with dimethylamine.
• Preparation ...: C. W. Todd, United States of America patent 2655447 (1953 to du Pont); Belgium patent 770928 (1971 to Pepro); A. Thizy et al., United States of America patent 4295877 (1981 to Philagro).
• Registration Notes: USA: Not marketed. Outside USA: Zodiac TX in France.
• ... isoproturon has the same mode of action and similar applications as diuron. However, it is far less used in practice.
• Toxicokinetic behavior and recoveries of isoproturon from feces, urine, and different tissues of goat were determined after 4, 5, 6, and 7 days following single oral administration at 500 mg/kg. ... The higher half-life (beta) (9.78 +/- 0.33 hr) and V(d)()area (4.49 +/- 0.41 L/kg) associated with lower Cl(B) (0.32 +/- 0.02 L/kg/hr) suggested slow elimination from the blood. ...

Synonyms

ISOPROTURON; 34123-59-6; Graminon; Tolkan; 3-(4-Isopropylphenyl)-1,1-dimethylurea; Arelon; Belgran; Arelon R; Nocilon; IPU Stefes; IP-Flo; Hytane 500L; Zodiac TX; DPX 6774; 3-p-Cumenyl-1,1-dimethylurea; CGA-18731

Frequently Asked Questions

What are the CAS number and molecular formula of Isoproturon?

CAS 34123-59-6; molecular formula C12H18N2O; molecular weight — g/mol.

What other names is Isoproturon known by?

ISOPROTURON, 34123-59-6, Graminon, Tolkan, 3-(4-Isopropylphenyl)-1,1-dimethylurea, Arelon.

Is Isoproturon classified as hazardous?

Hazard statements reported: H351, H373, H400, H410, H332.

What are the key physical properties of Isoproturon?

Melting Point: 158 °C; Flash Point: 100 °C (212 °F) - closed cup; Solubility: In water, 65 mg/L at 22 °C; Solubility: In water, 70 mg/L at 20 °C.

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.