4-Amino-3,5,6-trichlorpyridin-2-carbonsure

Gefahreninformationscode (GHS)

• Bildanzeige (GHS)

  

• Alarmwort

  Warnung

• Gefahrenhinweise

  H412：Schädlich für Wasserorganismen, mit langfristiger Wirkung.

• Sicherheit

  P273：Freisetzung in die Umwelt vermeiden.

  P501：Inhalt/Behälter ... (Entsorgungsvorschriften vom Hersteller anzugeben) zuführen.

Picloram Chemische Eigenschaften,Einsatz,Produktion Methoden

• ERSCHEINUNGSBILD

  FARBLOSE KRISTALLE ODER WEISSES PULVER MIT CHARAKTERISTISCHEM GERUCH.

• CHEMISCHE GEFAHREN

  Zersetzung beim Erhitzen unter Bildung von Stickstoffoxiden (s. ICSC 0067, ICSC 0930) und Chlorwasserstoff (s. ICSC 0163). Reagiert mit starken Basen. Greift Weichstahl an.

• ARBEITSPLATZGRENZWERTE

  TLV: 10 mg/m?(als TWA) Krebskategorie A4 (nicht klassifizierbar als krebserzeugend für den Menschen); (ACGIH 2005).
  MAK nicht festgelegt (DFG 2005).
  

• AUFNAHMEWEGE

  Aufnahme in den Körper durch Inhalation 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 BEI KURZZEITEXPOSITION

  WIRKUNGEN BEI KURZZEITEXPOSITION:
  Die Substanz reizt die Augen, die Haut und die Atemwege.

• WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION

  Möglich sind Auswirkungen auf die Leber.

• 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: Atemschutzgerät, P2-Filter für schädliche Partikel. NICHT in die Umwelt gelangen lassen.

• R-Sätze Betriebsanweisung:

  R36:Reizt die Augen.

• S-Sätze Betriebsanweisung:

  S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.

• Beschreibung

  Picloram is a colourless crystal. It is very soluble in acetone, ethanol, benzene, and dichloromethane. It is a systemic herbicide used for general woody plant control, sold under the trade names Tordon and Grazon. It also controls a wide range of broad-leaved weeds, but most grasses are resistant. It is used in formulations with other herbicides such as bromoxynil, diuron, 2,4-D, MCPA, triclorpyr, and atrazine. It is also compatible with fertilisers. Picloram, in the pyridine family of compounds, is a systemic herbicide used for control of woody plants and a wide range of broad-leaved weeds. Most grasses are resistant to picloram, so it is used in range management programs. Picloram is formulated either as an acid (technical product), a potassium or triisopropanolamine salt, or an isooctyl ester, and is available as either soluble concentrates, pellets, or granular formulations. The materials in this document refer to the technical acid form unless otherwise indicated. Picloram is stable under acidic, neutral and basic conditions. Picloram is formulated either as an acid (technical product), a potassium or triisopropanolamine salt, or an isooctyl ester, and is available as either soluble concentrates, pellets, or granular formulations and related manufacturing impurities.

• Chemische Eigenschaften

  Picloram is a colorless powder. Chlorine odor.

• Verwenden

  Herbicide.

• Verwenden

  It is used as a herbicide and defoliant.

• Verwenden

  Systemic herbicide used to control most broad-leaved weeds on grassland and noncrop areas. Use as a pesticide is restricted

• Verwenden

  Picloram is a dicot-selective, persistent herbicide and in salt form is used to control a variety of annual weeds on crops, perennial broadleaved herbs, and woody species in combination with 2,4-D or 2,4,5-T. It can persist in an active form in the soil from several months to years, and can also be released from the roots of treated plants into the soil, where other nontarget species may take it up and die. Picloram is of great use in the management of unwanted vegetation in rangeland, grass pastures, and forestry as well as non-cropland and rightsof- way sites, such as around industrial and military installations, roads, railways, airports, under power lines, and along pipelines. Additional uses in some countries include in rice, sugarcane, cereals, and oilseed rape.

• Definition

  ChEBI: Picloram is a pyridinemonocarboxylic acid that is pyridine-2-carboxylic acid which is substituted by a chloro group at positions 3,5 and 6, and by an amino group at position 4. It is a systemic herbicide used to control deeply rooted herbaceous weeds and woody plants in rights-of-way, forestry, range lands, pastures, and small grain crops. It has a role as a herbicide and a synthetic auxin. It is an aminopyridine, a pyridinemonocarboxylic acid, a chloropyridine and an organochlorine pesticide. It is functionally related to a picolinic acid.

• Allgemeine Beschreibung

  Fine beige crystals or white powder. Odor of chlorine.

• Air & Water Reaktionen

  Insoluble in water.

• Reaktivität anzeigen

  Picloram may be sensitive to prolonged exposure to light. Aqueous solutions may be decomposed by light. Picloram is incompatible with strong oxidizing agents, strong acids, acid chlorides and acid anhydrides.

• Health Hazard

  The toxic effects from ingestion or inhalation of dusts of picloram in test animals were mild. The acute oral LD50 values inrats and rabbits are 2900 and 2000 mg/kg,respectively. Maternal toxicity in rats wasobserved at a dose level of 750 mg/kg/day.Oral administration of picloram in rats andmice caused tumors in thyroid and liver.

• Brandgefahr

  Flash point data for Picloram are not available; however, Picloram is probably combustible.

• Landwirtschaftliche Anwendung

  Herbicide: Picloram is a systemic herbicide used for control of woody plants and a wide range of broad-leaved weeds along roads, power lines and long right-of-ways. Most grasses are resistant to picloram, so it is used in range management programs to control noxious weeds and brush. It is used to prepare sites for tree planting. Picloram is formulated either as an acid (technical product), a potassium or triisopropanolamine salt, or an isooctyl ester, and is available as either soluble concentrates, pellets, or granular formulations. During the Vietnam war, a herbicide named Agent White was used to control vegetation. It was a mixture of 2,4-D, triisopropanolamine salt and picloram. A U.S. EPA restricted Use Pesticide (RUP).

• Handelsname

  ACCESS®; AMDON®; AMDON GRAZON®; BOROLIN®; GRAZON® Picloram; K-PIN®; PATHWAY®; TORDON®[C]; TORDON® 101 MIXTURE; TORDON® 10 K; TORDON® 22 K

• Biochem/physiol Actions

  Picloram (4-Amino-3,5,6-trichloropyridine-2-carboxylic acid) is a chlorinated systemic herbicide widely used for woody plant and broad-leaved weed control. Picloram induces direct somatic embryogenesis of Lilium longiflorum var. Ceb-dazzel.

• Sicherheitsprofil

  Moderately toxic by ingestion. Questionable carcinogen with experimental carcinogenic, neoplas tigenic, tumorigenic, and teratogenic data. An experimental teratogen. Mutation data reported. When heated to decomposition it emits very toxic fumes of Cland NOx.

• mögliche Exposition

  A potential danger to those involved in the manufacture, formulation or application of this herbicide.

• Environmental Fate

  Soil. Degrades in soil via cleavage of the chlorine atom at the m-position to form 4- amino-5,6-dichloro-2-picolinic acid. Replacement of the chlorine at the m-posi-tion by a hydroxyl group yields 4-amino-3-hydroxy-5,6-dichloropicolinic acid (Hartley and Kidd, 1987). Other soil metabolites reported include carbon dioxide, chloride ions, 4-amino-6- hydroxy-3,5-dichloropicolinic acid (Meikle et al., 1974), 4-amino-3,5-dichloro-6-hydroxypicolinic acid and 4-amino-3,5,6-trichloropyridine (Goring and Hamaker, 1971). Youngson et al. (1967) reported that degradation increased with an increase in temperature and organic matter
  The half-lives for picloram in soil incubated in the laboratory under aerobic conditions ranged from 29 days to 3 years with an average of 201 days (Meikle et al., 1973; Yoshida and Castro, 1975; Merkle et al., 1976). In field soils, the half-lives for pi
  Groundwater. According to the U.S. EPA (1986) picloram has a high potential to leach to groundwater.
  Plant. Picloram degraded very slowly in cotton plants releasing carbon dioxide (Meikle et al., 1966). Metabolites identified in spring wheat were 4-amino-2,3,5-trichloropyridine, oxalic acid and 4-amino-3,5-dichloro-6-hydroxypicolinic acid (Redemann et al., 1968; Plimmer, 1970). In soil, 4-amino-3,5-dichloro-6-hydroxypicolinic acid was the only compound positively identified (Redemann et al., 1968)
  Photolytic. The sodium salt of picloram in aqueous solution was readily decom-posed by UV light (λ = 300–380 nm). Two chloride ions were formed for each molecule of picloram that reacted. It was postulated that degradation proceeded via a free ra

• Stoffwechsel

  Chemical. Picloram is generally stable to hydrolytic degradation but will decompose in hot, concentrated alkali solutions. It undergoes photodecomposition when irradiated with UV light and, to a lesser extent, with sunlight. Degradation via photolysis is thought to primarily involve cleavage of the ring structure and liberation of substituent chlorine atoms producing oxamic acid and 3-oxo-β-alanine. Decarboxylation is not thought to be a major pathway in photolytic degradation.
  Plant. Hall et al. (16) have shown that in rapeseed plants (Brassica spp.) >25% of picloram is metabolized 24 hours after treatment.
  Soil. There is only limited microbial degradation in the soil. If picloram remains on the soil surface, it may undergo photolysis.

• Versand/Shipping

  UN2588 Pesticides, solid, toxic, Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required.

• Toxicity evaluation

  Mammalian Toxicity. Studies conducted on dog, rat, steer, and human males indicate that most, if not all, of orally administered picloram is quickly excreted unmodified in the urine. The acute oral LD₅₀s for male rat, mice, rabbit, guinea pig, sheep, and cattle are >5000, 2000–4000, ca. 2000, ca. 3000, >1000, and >750 mg/kg, respectively.
  Weed Resistance/Modified Crop Tolerance. Weed resistance to picloram has been reported in populations of yellow starthistle (Centaurea solstitialis) (48) and wild mustard (Sinapis arvensis) (34). No crops with modified tolerance toward picloram are currently in production.

• Inkompatibilitäten

  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, epoxides. 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, and sulfides (releasing heat, toxic and possibly flammable gases), thiosulfates and dithionites (releasing hydrogen sulfate and oxides of sulfur). This material is acidic. Reacts with hot concentrated alkali (hydrolyzes), strong bases. May attack metals.

• Waste disposal

  This chlorinated brush killer is usually formulated with 2,4-D and the disposal problems are similar. Incineration @ 1000C for 2 seconds is required for thermal decomposition. Alternatively, the free acid can be precipitated from its solutions by addition of a mineral acid. The concentrated acid can then be incinerated and the dilute residual solution disposed in an area where several years’ persistence in the soil can be tolerated.

Picloram Upstream-Materialien And Downstream Produkte

4-Amino-3,5,6-trichlorpyridin-2-carbonsure Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global(308)Suppliers

1918-02-1, Picloram Verwandte Suche: