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Short-term toxicity to fish

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Description of key information

Test data is available on the acute toxicity of copper slag to fish. The results demonstrate that copper slag is not acutely toxic at the concentration tested : 96 h LC50>100g/l or 96 hr LC50 (for fish) >10 to < or equal 100 mg/l

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A reliable OECD 203 guideline study was performed which assessed the acute toxicity of copper slag (Sauerwald and Weiss, 2004) to Leuciscus idus in a limit test. The 96 h LC50 for copper slag was found to be >100 g/L. No mortalities or adverse effects were noted at this concentration. Typical slag sample has been tested which is within the composition concentration range defined in IUCLID Section 1.2.

The calculated classification via Toxic unit approach (Higher Tier Arche CLP Tool) resulted in an "Acute Category 3" classification for the UVCB substance. Based on this result, the related criteria provided the estimated value for acute (short term) toxicity to aquatic fish (see EU CLP Guidance Annex I Table 4.1.0):96 hr LC50 (for fish) >10 to < or equal 100 mg/l

Using a weight of evidence approach, the acute toxicity of copper slag to fish is greater than 100 mg/l or >10 to < or equal 100 mg/l which means No classification or Acute 3 classification.