Chinalphos (ISO)

Gefahreninformationscode (GHS)

• Bildanzeige (GHS)

  

• Alarmwort

  Achtung

• Gefahrenhinweise

  H311：Giftig bei Hautkontakt.

  H318：Verursacht schwere Augenschäden.

  H410：Sehr giftig für Wasserorganismen mit langfristiger Wirkung.

• Sicherheit

  P260：Dampf/Aerosol/Nebel nicht einatmen.

  P273：Freisetzung in die Umwelt vermeiden.

  P280：Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.

  P305+P351+P338：BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach Möglichkeit entfernen. Weiter spülen.

Quinalphos Chemische Eigenschaften,Einsatz,Produktion Methoden

• R-Sätze Betriebsanweisung:

  R21:Gesundheitsschädlich bei Berührung mit der Haut.
  R25:Giftig beim Verschlucken.
  R50/53:Sehr giftig für Wasserorganismen, kann in Gewässern längerfristig schädliche Wirkungen haben.
  R51/53:Giftig für Wasserorganismen, kann in Gewässern längerfristig schädliche Wirkungen haben.
  R36:Reizt die Augen.
  R20/21/22:Gesundheitsschädlich beim Einatmen,Verschlucken und Berührung mit der Haut.
  R11:Leichtentzündlich.

• S-Sätze Betriebsanweisung:

  S22:Staub nicht einatmen.
  S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
  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.
  S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.

• Verwenden

  Quinalphos is used to control both chewing and sucking insects and mites in a large number of different crops.

• Definition

  ChEBI: Quinalphos is an organic thiophosphate and an organothiophosphate insecticide. It has a role as an EC 3.1.1.7 (acetylcholinesterase) inhibitor, an acaricide and an agrochemical. It is functionally related to a quinoxalin-2-ol.

• Sicherheitsprofil

  Poison by ingestion, inhalation, skin contact, parenteral, and intraperitoneal routes. Experimental reproductive effects. Mutation data reported. An insecticide. When heated to decomposition it emits very toxic fumes of NOx, POx, and SOx

• Stoffwechselwegen

  In methanol solution, quinalphos undergoes photodegradation reactions of isomerization, oxidation, and deesterification, together with other degradation reactions, resulting in several degradation products. However, the photolysis of quinalphos in ethanol solution yields the two products, O,O-diethyl-O-(3- ethoxyquinoxalin-2-yl)phosphorothioate and O,O- diethyl-O-[3(1-hydroxyethyl)-quinoxalin- 2yl]phosphorothioate, both of which are derived from the reaction of the photoexcited quinalphos molecule with the solvent.

• Degradation

  Quinalphos is susceptible to hydrolysis. The DT₅₀ values at pH 3,6 and 9 were 23,39 and 26 days, respectively (PM). Quinalphos is very susceptible to acid hydrolysis but stable under mildly basic conditions, having a halflife ten times that of parathion at pH 11 (Schmidt, 1972). Quinalphos was degraded in distilled water (pH 6.0), rain water (pH 6.8) and tap water (pH 7.8) with DT₅₀ values of 80,50 and 60 days, respectively (Dureja ef aI., 1988). The photolysis of quinalphos in ethanolic solution irradiated by a medium pressure mercury vapour lamp (λmax 366 nm) with a glass filter to screen out light of <290 nm gave photoproducts principally derived from reaction with the solvent. The main photolysis products were 3-ethoxyand 3-hydroxyethyl-quinoxaline derivatives of quinalphos (not shown in Scheme 1). A minor product of photodegradation was quinalphos oxon (2) (Pusino et al., 1989). When quinalphos was irradiated with a high pressure mercury vapour lamp (λmax 254 nm) in a quartz reactor many more photoproducts were detected, although whether this information is relevant to photodegradation in the environment is debatable since light of wavelength ﹤290 nm is generally absent at the Earth's surface. Using this method of irradiation, Dureja et al. (1988) examined the photolysis of quinalphos in hexane and methanol solution, as a thin film on a glass plate and on the soil surface. Analysis of the photoproducts was by MS and ¹H NMR spectroscopy after separation by TLC and GC. The rates of photodecomposition in aqueous solution and on soil surfaces exposed to sunlight were also measured, although in these experiments the nature of the photoproducts were not determined. In methanol solution, three major pathways of photolysis were apparent: (a) de-esterification to afford quinoxolin-2-o1(3), (b) thionethiolo rearangement to O,O-diethyl S-quinoxalin-2-yl phosphorothioate (4), which was not actually detected and was presumably de-esterified to give quinoxoline-2-thiol (5) which dimerised to the disulfide (6) and the sulfide (7), and (c) oxidation of the P=S sulfur to afford the oxon (2) as shown in Scheme 1. In addition, the de-esterification of the phosphorothioate moiety and additional alkyl transfer from quinalphos gave triethyl phosphate (S), O,O,O-triethyl phosphorothioate (9) and O,O,S-triethyl phosphorodithioate (10). A number of other photoproducts were identified which were formed via reaction of the methanol solvent with quinalphos (1) and quinoxolin-2-o1 (3) but because of their non-relevance to photoproducts produced under environmental conditions they are not included in Scheme 1.
  Irradiation of quinalphos as a thin film on glass produced quinalphos oxon (2) and quinoxolin-2-o1(3) as the main photoproducts. The products from the soil irradiation experiments were identified as quinalphos oxon (2), the rearranged product O,O-diethyl S-quinoxalin-2-yl phosphorothioate (4), quinoxolin-2-o1(3), quinoxoline-2-thiol(5) and the sulfide (7). Routes for photodegradation of quinalphos in methanol solution, as a thin film and on soil surfaces are shown in Scheme 1. Half-lives for the photodecomposition of quinalphos by sunlight in water varied from 23 to 30 days and on soil surfaces from 2 to 5 days.

Quinalphos Upstream-Materialien And Downstream Produkte

Chinalphos (ISO) Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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