Registration Dossier
Registration Dossier
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EC number: 209-170-2 | CAS number: 557-34-6
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
Key study: Test method OECD 202. GLP study: The 48h-EC50 for zinc acetate in Daphnia magna was determined to be 3.72 mg/L TWA.
Supporting study: The 48h-LC50 of zinc acetate in Brown mussel (Perna indica) was 6.38 mg/L.
Supporting study: The 8h-NOEC of zinc acetate in Tetrahymena was 91.74 mg/L.
Key value for chemical safety assessment
Marine water invertebrates
Marine water invertebrates
- Effect concentration:
- 3.72 mg/L
Additional information
Key study: An acute Daphnia magna immobilization test was performed with zinc acetate according to the OECD Guideline 202. 20 daphnids per dose were exposed up to 10 mg/L under semi-static conditions for 48 hours. The 48h-EC50 of zinc acetate in Daphnia magna was determined to be 3.72 mg/L TWA. The 48h-NOEC was 2.5 mg/L TWA (basis for effect: mobility).
Supporting study: An Acute Toxicity Test of zinc acetate dihydrate was performed in groups of ten Brown mussel (Perna indica). The concentrations used in the assay were: 1000, 1250, 1500, 1750, 2000, and 2250 ppb of Zn. Every 24 h the test solution was replaced with fresh one. The (48 h) LC50 of zinc acetate was 6.38 mg/L.
Supporting study: NOEC 8h of zinc acetate for Tetrahymena was at 91.74mg/L.
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