3-(3,4-Dichlorphenyl)-1-methoxy-1-methylharnstoff Chemische Eigenschaften,Einsatz,Produktion Methoden
ERSCHEINUNGSBILD
FARBLOSE KRISTALLE
CHEMISCHE GEFAHREN
Zersetzung beim Erhitzen unter Bildung giftiger Rauche mit Chlorwasserstoff und Stickstoffoxiden.
ARBEITSPLATZGRENZWERTE
TLV nicht festgelegt (ACGIH 2005).
MAK nicht festgelegt (DFG 2005).
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation des Aerosols und durch Verschlucken.
INHALATIONSGEFAHREN
Verdampfen bei 20°C vernachlässigbar; eine belästigende Partikelkonzentration in der Luft kann jedoch beim Versprühen oder Dispergieren schnell erreicht werden, vor allem als Pulver.
WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION
Möglich sind Auswirkungen auf das Blut. Führt zu Blutarmut.
LECKAGE
NICHT in die Kanalisation spülen. Verschüttetes Material in Behältern sammeln; falls erforderlich durch Anfeuchten Staubentwicklung verhindern. Reste sorgfältig sammeln. An sicheren Ort bringen. Persönliche Schutzausrüstung: Umgebungsluftunabhängiges Atemschutzgerät.
R-Sätze Betriebsanweisung:
R61:Kann das Kind im Mutterleib schädigen.
R22:Gesundheitsschädlich beim Verschlucken.
R40:Verdacht auf krebserzeugende Wirkung.
R48/22:Gesundheitsschädlich: Gefahr ernster Gesundheitsschäden bei längerer Exposition durch Verschlucken.
R50/53:Sehr giftig für Wasserorganismen, kann in Gewässern längerfristig schädliche Wirkungen haben.
R62:Kann möglicherweise die Fortpflanzungsfähigkeit beeinträchtigen.
R39/23/24/25:Giftig: ernste Gefahr irreversiblen Schadens durch Einatmen, Berührung mit der Haut und durch Verschlucken.
R23/24/25:Giftig beim Einatmen, Verschlucken und Berührung mit der Haut.
R11:Leichtentzündlich.
S-Sätze Betriebsanweisung:
S53:Exposition vermeiden - vor Gebrauch besondere Anweisungen einholen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
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.
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
Beschreibung
Linuron is found as white crystals that have no smell. It is very
slightly soluble in water. Linuron can enter the body either by
ingestion of contaminated food or water or by dermal contact.
Linuron can cause nausea, vomiting, and diarrhea. Eye contact
can cause irritation. There is little evidence available as to the
effects of exposure to linuron on human health. However,
exposure to linuron at normal background levels is unlikely to
have any adverse effect on human health.
Chemische Eigenschaften
White crystalline solid or powder. Odorless.
Commercial product may be available a water soluble or
emulsifiable concentrate.
Verwenden
Linuron is used to control annual and perennial broadleaf and
grassy weeds on crop and noncrop sites. It is used as a pre- and
post-emergent herbicide. It works by inhibiting photosynthesis
in target weed plants. It is used in soybean, cotton, potato, corn,
bean, pea, winter wheat, asparagus, carrot, and fruit crops. It is
also used on crops stored in warehouses and storerooms.
Linuron is classified by the US Environmental Protection
Agency (EPA) as a Restricted Use Pesticide (RUP).
Definition
ChEBI: A member of the class of ureas that is N-methyl urea substituted by a methoxy group at position 1 and a 3,4-dichlorophenyl group at position 3.
Allgemeine Beschreibung
Colorless crystals. Non corrosive. Used as an herbicide.
Air & Water Reaktionen
Hydrolyzed slowly by acids and bases.
Reaktivität anzeigen
A urea derivative.
Health Hazard
Lowtomoderatelytoxicbyingestion—LD50varying with experimental animals; 4-hourexposure to its vapors at 48 mg/m
3 was lethalto rats; toxic properties similar to those ofMonuron.
LD50 oral (rat): 1146 mg/kg
LD50 oral (mouse): 2400 mg/kg
LD50 inhalation (rat): 48 mg/m
3 /4 h.
Landwirtschaftliche Anwendung
Herbicide: Inhibits photosynthesis. Linuron is a selective,
pre-emergence herbicide used to control grasses and
broadleaf weeds in carrots, beans, peas, asparagus, maize,
potatoes, soybeans, sorghum, wheat, bananas, coffee, cotton
and ornamentals. It is also used for control of annual
weeds in storehouses, roadsides, fence rows and other noncrop
lands. Linuron is frequently used in formulations with
other herbicides, insecticides and fungicides.
Handelsname
AFALON®; ALIBI®; ALISTELL®;
BROADCIDE 20EC®; BRONOX®; CERTOLLIN
ONIONS®; CLOVACORN EXTRA®; CROP
WEEDSTOP®; DU PONT 326®[C]; FF6135' HERBICIDE
326®; GARNITAN®; H 326®; GEMINI®[C];
HERBICIDE 326®; HOE 2810®; JANUS®;
LANDSIDE®; LINNET®; LINEX®; LINOROX®;
LINUREX®; LOREX®; LOROX®[C]; MARKSMAN
1®; NEMINFEST®; ONSLAUGHT®; PRE-EMPT®;
PREMALIN®; PROFALON®; ROTILIN®; SARCLEX®;
SCARCLEX®; SINURON®; STAY KLEEN®; TEMPO®;
TRIFARMON FL®; TRIFLURON®; TRILIN®;
URANUS® (trifluralin + linuron); WARRIOR®
Sicherheitsprofil
Poison by inhalation.
Moderately toxic by ingestion. Mutation data
reported. A selective herbicide used in
farming. Vlihen heated to decomposition it
emits very toxic fumes of Cl and NOx. See
also 3-@-CHLOROPHENYL)-1,1
DIMETHYLUREA.
mögliche Exposition
Inhibits photosynthesis. Linuron is a
selective, pre-emergence urea herbicide used to control
grasses and broadleaf weeds in carrots, beans, peas, asparagus, maize, potatoes, soybeans, sorghum, wheat, bananas,
coffee, cotton, and ornamentals. It is also used for control
of annual weeds in storehouses, roadsides, fence rows and
other noncrop lands. Linuron is frequently used in formulations with other herbicides, insecticides, and fungicides
Environmental Fate
Soil. Linuron degraded in soil forming the common metabolite 3,4-dichloroaniline
(Duke et al., 1991). In an aerobic, biologically active, organic-rich, pond sediment, linuron
was converted to the intermediate 3-(3-chlorophenyl)-1-methoxymethylurea. This compound
further degraded to unidentified compounds (Stepp et al., 1985).
Linuron was degraded by Bacillus sphaericus in soil forming N,O-dimethylhydroxylamine
and carbon dioxide (Engelhardt et al., 1972). Only 1 ppm 3,4-dichloroaniline was
identified in soils after incubation of soils containing 500 ppm linuron (Belasco and Pe
The half-lives for linuron in soil incubated in the laboratory under aerobic conditions
ranged from 56 to 88 days with an average of 75 days (Moyer et al., 1972; Hance, 1974;
Usorol and Hance, 1974). In field soils, the average half-life for linuron was 8
Plant. Undergoes demethylation and demethoxylation in plants (Hartley and Kidd,
1987). Metabolites identified in carrots 117 days after treatment were 3,4-dichlorophenylurea,
3-(3,4-dichlorophenyl)-1-methylurea and 3,4-dichloroaniline. About 87% of the
linuron remained unreacted (Loekke, 1974).
Photolytic. When an aqueous solution of linuron was exposed to summer sunlight for
2 months, 3-(3-chloro-4-hydroxyphenyl)-1-methoxy-1-methylurea, 3,4-dichlorophenylurea
and 3-(3,4-dichlorophenyl)-1-methylurea formed at yields of 13, 10 and 2%, re
Stoffwechselwegen
The main photoproducts initially formed in the
phototransformation of linuron and chlorbromuron in
aqueous solution result from photolysis, i.e.
hydroxylation with release of the halide ion, and from
elimination of a methoxy group. The orientation of the
reaction depends on the wavelength: short
wavelengths (254 nm) favor demethoxylation and
photolysis in the meta position,whereas, with black light longer than 330 nm,
photolysis in the para position is the main reaction
observed. In soils, 4-bromo-3-chloroaniline is identified
as a soil degradation product of chlorbromuron.
Versand/Shipping
UN3077 Environmentally hazardous substances,
solid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous hazardous material, Technical Name Required.
Inkompatibilitäten
Amides are incompatible with oxidizers
(chlorates, nitrates, peroxides, permanganates, perchlorates,
chlorine, bromine, fluorine, etc.); contact may cause fires
or explosions. Keep away from alkaline materials, strong
bases, strong acids, oxoacids, and epoxides. Similar organic
amides react with azo and diazo compounds, releasing
toxic gases. Contact with reducing agents can release flammable gases. Amides are very weak bases but they can
react as acids, forming salts. Mixing amides with dehydrating agents such as such as phosphorus pentoxide or thionyl
chloride generates the corresponding nitrile
Waste disposal
Incinerate in a unit operating
at 850C equipped with off-gas scrubbing equipment.
Containers must be disposed of properly by following package label directions or by contacting your local or federal
environmental control agency, or by contacting your
regional EPA office
3-(3,4-Dichlorphenyl)-1-methoxy-1-methylharnstoff Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
