Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.22 mg/L
Assessment factor:
50
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
1 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.022 mg/L
Assessment factor:
500
Extrapolation method:
assessment factor
PNEC marine water (intermittent releases):
0.1 mg/L

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
4 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.089 mg/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:
10 mg/kg soil dw
Assessment factor:
50
Extrapolation method:
assessment factor

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Conclusion on classification

Justification for classification

Degradation

Biodegradation: not readily biodegradable: 0% based on DOC removal (OECD 301 A ; read-across)

Bioaccumulation

Partition coefficient: log Pow < -2.5 at 20 °C, pH = 6

 

Aquatic acute toxicity

Fish (Oncorhynchus mykiss): LC50 (96 h) > 100 mg/L (read-across)

Aquatic invertebrates (Daphnia magna): EC50 (48 h) > 100 mg/L (read-across)

Aquatic algae (Pseudokirchneriella subcapitata): ErC50 (72 h) > 100 mg/L (read-across)

 

Aquatic chronic toxicity

Fish: no data available

Aquatic invertebrates (Daphnia magna): NOEC (21 d) 11.1 mg/L (read-across)

Aquatic algae (Pseudokirchneriella subcapitata): NOErC (72 h) >= 100 mg/L (read-across)

 

Conclusion on classification

The substance is not readily biodegradable. The available read across data indicate no acute aquatic toxicity. All L(E)C50 values are > 100 mg/L (fish, aquatic invertebrates and algae). Valid read-across data on chronic toxicity are available for algae and aquatic invertebrates. The determined NOEC values are clearly above 1 mg/L. Therefore, Reaction mass of dipotassium 2-(3,4-dimethyl-1H-pyrazol-1-yl) succinate and dipotassium 2-(4,5-dimethy-1H-pyrazol-1-yl) succinate does not meet the criteria for classification and labelling for acute or chronic toxicity according to the consolidated version of the Regulation (EC) No. 1272/2008 (CLP) and further amendments.