Fenazaquin Chemische Eigenschaften,Einsatz,Produktion Methoden
R-S?tze Betriebsanweisung:
R20:Gesundheitssch?dlich beim Einatmen.
R25:Giftig beim Verschlucken.
R50/53:Sehr giftig für Wasserorganismen, kann in Gew?ssern l?ngerfristig sch?dliche Wirkungen haben.
S-S?tze Betriebsanweisung:
S37:Geeignete Schutzhandschuhe tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).
S60:Dieses Produkt und sein Beh?lter sind als gef?hrlicher Abfall zu entsorgen.
S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.
Verwenden
Fenazaquin is a non-systemic acaricide/insecticide used widely in controlling mites and other related pests in fruits, vegetables and tea.
Stoffwechselwegen
Fenazaquin is a lipophilic compound and hence is immobile in soils and is
not translocated in plants. The main pathways of metabolism involve
cleavage of the bridging group between the quinazoline and phenyl rings,
oxidation of the tert-butyl sustituent and of the heterocyclic portion of the
quinazoline ring and cleavage of that ring. Most of the information is
taken from a pamphlet produced by the manufacturer of the compound in
which full experimental details were not given (DowElanco, 1993).
Degradation
Fenazaquin is hydrolysed under acidic conditions but the rate is slow
under neutral and alkaline conditions. Half-lives were 8,442 and 584 days
(22 °C) at pH values of 5, 7 and 9, respectively. Hydrolysis occurs by
cleavage of the ether linkage to form quinazolin-2-ol (2) and an alcohol
(3) as shown in Scheme 1. The major route of degradation in aquatic
environments is by photolysis, the main products (2 and 3) being formed
by cleavage of the ether lmkage and include the alkene (4) (DowElanco,
1993).
Fenazaquin Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
