Registration Dossier
Registration Dossier
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EC number: 410-340-5 | CAS number: 69045-84-7 DCTFMP
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Hazard for air
Hazard for terrestrial organisms
Hazard for predators
Additional information
Water quality standards (WQS) for dichlopyr were derived as described in the report from the Danish EPA: “Principper for fastsættelse af vandkvalitetskriterier for stoffer i overfladevand” [Principles for establishment of Water Quality Standards for substances in surface waters] (Miljøstyrelsen, 2004). The available data included studies from short-term studies with species from three trophic levels and one long-term NOEC for crustacean.
With two NOEC values (crustacean long-term and algae short term) from two trophic levels an assessment factor of respectively 50 and 500 was used on the lowest ECNOECfor freshwater and saltwater respectively.
However as PNECsec.pois.wis lower than PNECwater,the value for PNECsec.pois.wis used as the WQS.
A Maximum Acceptable Concentration (MAC) was derived on the basis of the lowest E/LC50-value and an assessment factor of 100.
WQSfreshwater= 0.53 µg/l
WQSsaltwater= 0.53 µg/l
MAC = 30 µg/l
"Høring af forslag til vandkvalitetskriterier og miljøkvalitetskrav for 13 kemiske stoffer, Bilag 2.9 2,3- Dichloro-5-trifluormethylpyridin; Dichlopyr (CAS 69045-84-7; EC#410-340-5) Fastsættelse af kvalitetskriterier"
Conclusion on classification
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