3-(4-Chlorphenyl)-1,1-dimethylharnstoff

Bezeichnung:3-(4-Chlorphenyl)-1,1-dimethylharnstoff

CAS-Nr150-68-5

Englisch Name:MONURON

CBNumberCB4706609

SummenformelC9H11ClN2O

Molgewicht198.65

MOL-Datei150-68-5.mol

Synonyma

Monuron

3-(4-Chlorphenyl)-1,1-dimethylharnstoff

3-(4-Chlorphenyl)-1,1-dimethylharnstoff physikalisch-chemischer Eigenschaften

Schmelzpunkt	173-174 °C (lit.)
Siedepunkt	301.31°C (rough estimate)
Dichte	1,27 g/cm³
Dampfdruck	0Pa at 20℃
Brechungsindex	1.5330 (estimate)
storage temp.	0-6°C
pka	14.22±0.70(Predicted)
Aggregatzustand	Crystalline Solid
Farbe	White
Wasserlöslichkeit	262mg/L(25 ºC)
maximale Wellenlänge (λmax)	244nm(H2O)(lit.)
Merck	14,6261
BRN	2097922
LogP	1.94 at 20℃
IARC	3 (Vol. Sup 7, 53) 1991
EPA chemische Informationen	Monuron (150-68-5)

Sicherheit

Kennzeichnung gefährlicher	Xn,N
R-Sätze:	22-40-50/53
S-Sätze:	36/37-60-61
RIDADR	UN 3077 9/PG 3
WGK Germany	3
RTECS-Nr.	YS6300000
TSCA	Yes
HazardClass	9
PackingGroup	III
HS Code	29242990
Giftige Stoffe Daten	150-68-5(Hazardous Substances Data)
Toxizität	LD50 orally in rats: 3700 mg/kg (Bailey, White)

Gefahreninformationscode (GHS)

MONURON Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
R40:Verdacht auf krebserzeugende Wirkung.
R50/53:Sehr giftig für Wasserorganismen, kann in Gewässern längerfristig schädliche Wirkungen haben.
S-Sätze Betriebsanweisung:
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
S60:Dieses Produkt und sein Behälter sind als gefährlicher Abfall zu entsorgen.
S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.
Chemische Eigenschaften
White, crystalline solid; odorless. Very low solubility in water and hydrocarbonsolvents; slightly soluble in oils; partially soluble inalcohols; stable toward oxidation and moisture.
Verwenden
Monuron may be used as a reference standard in the determination of monuron in rice and corn using high performance liquid chromatography coupled with fluorescence detection combined with ultraviolet decomposition and post-column derivatization.
Verwenden
Herbicide, sugarcane-flowering suppressant.
Definition
ChEBI: A member of the class of ureas that is urea in which one of the nitrogens is substituted by a p-chlorophenyl group while the other is substituted by two methyl groups.
Allgemeine Beschreibung
White crystalline solid or white powder with a slight odor. Melting point 175°C. Moderately toxic by ingestion. Used as an herbicide.
Air & Water Reaktionen
Insoluble in water. Is hydrolyzed slowly by acids and alkalis, and more rapidly on heating .
Reaktivität anzeigen
MONURON is a chlorinated urea derivative. May react with azo and diazo compounds to generate toxic gases. May react with strong reducing agents to generate flammable gases. Reacts as a weak base. Combustion generates mixed oxides of nitrogen (NOx).
Hazard
Questionable carcinogen.
Health Hazard
Toxic properties are similar to Diuron; hydro-lyzes under acidic or alkaline conditions top-chloroaniline, which can cause anemia andmethemoglobinemia; LD50 data published inthe literature differ; acute and chronic tox-icity of this herbicide is probably of loworder; no reported case of human poisoning; showed clear evidence of carcinogenicity in male F344/N rats fed diets containing 750 ppm monuron for 2 years; causedcancers in the kidney and liver (NationalToxicology Program 1988); female rats andmale and female mice (B6C3F1) showed noevidence; induced cytomegaly of the renalepithelial cells in rats.
LD50 oral (rat): 3700 mg/kg (Bailey andWhite, 1965)
LD50 oral (rat): 1053 mg/kg (Lewis 1995).
Brandgefahr
Flash point data for MONURON are not available; however, MONURON is probably combustible.
Flammability and Explosibility
Not classified
Sicherheitsprofil
Moderately toxic by ingestion, intraperitoneal, and possibly other routes. Experimental teratogenic and reproductive effects. Questionable carcinogen with experimental carcinogenic data. Mutation data reported. An herbicide. When heated to decomposition it emits very toxic fumes of NOx and Cl-.
Environmental Fate
Biological. Monuron was mineralized in sewage samples obtained from a water treatment plant in Ithica, NY. (4-Chlorophenyl)urea and 4-chloroaniline were tentatively identified as metabolites (Wang et al., 1985).
Soil/Plant. In soils and plants, monuron is demethylated at the terminal nitrogen atom coupled with ring hydroxylation forming 3-(2-hydroxy-4-chlorophenyl)urea and 3-(3- hydroxy-4-chlorophenyl)urea (Hartley and Kidd, 1987). Walln?efer et al. (197
Photolytic. When an aqueous solution of monuron was exposed to sunlight or simulated sunlight, the major degradative pathways observed were the photooxidation and demethylation of the N-methyl groups (Crosby and Tang, 1969; Tanaka et al., 1982a),
Tanaka et al. (1981) studied the photolysis of monuron in dilute aqueous solutions in order to fully characterize a substituted diphenylamine that was observed in an earlier investigation (Tanaka et al., 1977). They identified this compound as an isomeric mixture containing 92% 2-chloro-4￠,5-bis(N￠,N￠-dimethylureido)biphenyl and 8% 5-chloro-2,4￠- bis(N￠,N￠-dimethylureido)biphenyl (Tanaka et al., 1981).
Tanaka et al. (1982) undertook a study to identify the several biphenyls formed in earlier photolysis studies (Tanaka et al., 1979, 1981). They identified these compounds as 2,4￠-, 3,4￠- and 4,4￠-bis-(N￠,N￠-dimethylureido)biphenyls (fenuron biphenyls) (Ta
läuterung methode
Crystallise monuron from MeOH. [Beilstein 12 IV 1191.]

MONURON Upstream-Materialien And Downstream Produkte

3-(4-Chlorphenyl)-1,1-dimethylharnstoff Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

150-68-5, MONURON Verwandte Suche:

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