Registration Dossier
Registration Dossier
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EC number: 248-370-4 | CAS number: 27253-29-8
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
Key data (lowest EC50 values) are:
-for Ceriodapnia dubia: 0.413 mg Zn/l (single value) at low pH and low hardness
-for Ceriodapnia dubia: >0.53 mg Zn/l (single value) at low pH and high hardness
-for Ceriodapnia dubia: 0.147 mg Zn/l (geomean value) at neutral/high pH and low hardness
-for Ceriodapnia dubia: 0.228 mg Zn/l (geomean value) at neutral/high pH and high hardness
Key value for chemical safety assessment
Additional information
Many good quality and relevant data for 5 standard species. Tests were done according to standard protocol or equivalent.
Data are grouped per species according to
-pH: low (6 -<7) - neutral/high (7 -8.5)
-and hardness: low/medium (<100mg CaCO3/l) and medium/high (>100 mg CaCO3/l).
Ceriodaphnia dubia is for all test conditions the most sensitive species.
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