3,6-Dichlorpyridin-2-carbonsure Chemische Eigenschaften,Einsatz,Produktion Methoden
ERSCHEINUNGSBILD
GERUCHLOSE WEISSE ODER FARBLOSE KRISTALLE.
CHEMISCHE GEFAHREN
Zersetzung beim Verbrennen unter Bildung giftiger und ätzender Rauche mit Stickstoffoxiden und Chlor (s. ICSC 0126). Lösungen zersetzen Aluminium, Eisen und Zinn.
ARBEITSPLATZGRENZWERTE
TLV nicht festgelegt (ACGIH 2005).
MAK nicht festgelegt (DFG 2005).
AUFNAHMEWEGE
Aufnahme in den Körper über die Haut und durch Verschlucken.
INHALATIONSGEFAHREN
Verdampfen bei 20°C vernachlässigbar; eine belästigende Partikelkonzentration in der Luft kann jedoch schnell erreicht werden.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION: Die Substanz reizt die Augen, die Haut und die Atemwege.
LECKAGE
Verschüttetes Material in Behältern sammeln; falls erforderlich durch Anfeuchten Staubentwicklung verhindern. Reste sorgfältig sammeln. An sicheren Ort bringen. Persönliche Schutzausrüstung: Atemschutzgerät, P1-Filter für inerte Partikel.
R-Sätze Betriebsanweisung:
R41:Gefahr ernster Augenschäden.
R51/53:Giftig für Wasserorganismen, kann in Gewässern längerfristig schädliche Wirkungen haben.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S30:Niemals Wasser hinzugießen.
S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.
S39:Schutzbrille/Gesichtsschutz tragen.
Beschreibung
Clopyralid is an herbicide that selectively inhibits the growth of the broadleaf weed
L. palustris over a panel of 17 New Zealand native non-broadleaf plant species when applied at a concentration of 1.5 mg/L. It does not inhibit growth of human pluripotent stem cells (IC
50 = >100 μM) or decrease nuclear translocation of the transcription factor SOX17, a marker of teratogenic risk.
In vivo, clopyralid induces brain defects in rabbits, but not rats, when administered at a dose of 250 mg/kg.
Chemische Eigenschaften
White Crystalline Solid
Verwenden
Systemic post-emergence herbicide for use in food crops and mesquite.
Definition
ChEBI: An organochlorine pesticide having a 3,6-dichlorinated picolinic acid structure.
Landwirtschaftliche Anwendung
Herbicide: Clopyralid is used to control annual and perennial
broadleaf weeds on rangeland, pastures, turf and lawns,
rights-of-way and a few agricultural products such as
sugar beets, oats, barley, mint and wheat.
Handelsname
ACCENT®; CONFRONT®; CURTAIL®;
CURTAIL M®; DOWCO®-290; HORNET®;
LONTREL®; LONTREL® 3; LONTRIL® F;
LONTRIL® T; MATRIGON®; MILLENNIUM®;
NAF®-280; PARADIGM®; RECLAIM®; REDEEM®;
RIVERDALE®; SCORPION®; STINGER®;
TRANSLINE®; WIDEMATCH®; XRM-3972®
Pharmakologie
Clopyralid is systemic herbicides that is actively absorbed by foliage
and, is also readily
absorbed through root tissues. Once absorbed, it is translocated, primarily in the phloem,
throughout the entire plant. At normal field doses, this
herbicide controls many broadleaf species and are selective
in pasturelands and most grass crops. The exact weed
spectrum and use is specific to the compound.
mögliche Exposition
Clopyralid is a pyralid herbicide used to control annual and perennial broadleaf weeds on rangeland, pastures, turf, and lawns, rights-of-way and a few agricultural products such as sugarbeets, oats, barley, mint, and wheat.
Environmental Fate
Clopyralid is a relatively strong
acid and water soluble, making it susceptible to leaching.
Most studies, however, indicate that it is metabolized
relatively quickly by soilmicrobes, significantly decreasing
the amount of clopyralid that is available for this process.
Clopyralid is dissociated in soil because of its low pKa, and
thus, its adsorption to most soils is weak and governed
by the anion exchange capacity. Soils with relatively
large anion exchange capacities will bind relatively large
quantities of clopyralid,making it biologically unavailable.
Clopyralid is not volatile.
Stoffwechsel
Chemical. Clopyralid is stable to hydrolytic decomposition
in acidic conditions becoming unstable above pH 5.
It does not undergo significant photolytic degradation.
Clopyralid decomposes above its melting point.
Plant. Hall and Vanden Born (29) showed that clopyralid
underwent substantial metabolism in tolerant Brasica
napus; i.e., 70% of applied clopyralid was metabolized
144 hours after application. Themetabolites were not fully
characterized. Relatively little metabolism is thought to
occur in susceptible plants.
Soil. Clopyralid is readily degraded by soil microbes,
e.g., the field dissipation DT
50 ranges from 8 to
66 days. The major metabolic pathway in soil microbes
is decarboxylation.
Versand/Shipping
UN3077 Environmentally Hazardous substances, solid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous hazardous material, Technical Name Required
Inkompatibilitäten
May react violently with strong oxidizers, bromine, 90% hydrogen peroxide, phosphorus trichloride, silver powders, or dust. Incompatible with silver compounds. Mixture with some silver compounds forms explosive salts of silver oxalate. Keep away from oxidizers, sulfuric acid, caustics, ammonia, aliphatic amines, alkanolamines, isocyanates, alkylene oxides, epichlorohydrin. Solutions are strong acids; corrosive to aluminum, iron, and tin. Compounds of the carboxyl group react with all bases, both inorganic and organic (i.e., amines) releasing substantial heat, water, and a salt that may be harmful. Incompatible with arsenic compounds (releases hydrogen cyanide gas), diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, sulfides (releasing heat, toxic, and possibly flammable gases), thiosulfates, and dithionites (releasing hydrogen sulfate and oxides of sulfur).
Waste disposal
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. Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an Clopyralid 877 afterburner and scrubber. In accordance with 40CFR165, follow recommendations for the disposal of pesticides and pesticide containers.
3,6-Dichlorpyridin-2-carbonsure Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
