Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
2.5 µg/L
Assessment factor:
100
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
17 µg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.25 µg/L
Assessment factor:
1 000
Extrapolation method:
assessment factor
PNEC marine water (intermittent releases):
1.7 µg/L

STP

Hazard assessment conclusion:
no hazard identified

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
73 µg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
7.3 µg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
13.1 µg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Conclusion on classification

Acute toxicity: The 96 -h LC50 for fish was determined to be 1.7 mg/L using Onchorhynchus mykiss, the 48 -h EC50 for Daphnia magna was determined to be 2.5 mg/L and the ErC50 (24 -48h) for algae (Scenedesmus subspicatus) was determined to be 42 mg/L. According to the Guidance to Regulation (EC) No 1272/2008 on classification, labelling and packaging (CLP) of substances and mixtures (Version 4.1, June 2015), in order to classify a substance as Acute 1, a L(E)C50 value for one of the trophic levels must be <= 1mg/L. As all the L(E)C50 values are >1 mg/L, classification for Acute aquatic toxicity is not required.

Chronic toxicity: The NOEC in a 21-d daphnia reproduction study (OECD 202; 1984 version) was reported as 0.25 mg/L based on immobilisation and reproduction. The substance is readily biodegradable. On this basis, the substance is classified as Aquatic Chronic 3.