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Short-term toxicity to fish

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Description of key information

The 48 h LC50 of MAPTAC in freshwater fish was > 5000 mg a.i./L (DIN 38412 part 15).

Key value for chemical safety assessment

LC50 for freshwater fish:
5 000 mg/L

Additional information

One acute toxicity study in freshwater fish is available for MAPTAC, which is considered reliable with restrictions (Klimisch score = 2).


In a 48-h acute toxicity study according to DIN 38412 part 15, golden orfes (Idus melanotus HECKEL) were exposed to MAPTAC (50±1% a.i. according to supplier) in nominal concentrations of 2000, 5000 and 10000 mg/L under static conditions.

The 48-h EC50 was > 5000 mg a.i./L. The 48-h NOEC was 5000 mg a.i./L.

The exposure period was only 48 h instead of 96 as recommended for safety assessment. A classification of MAPTAC based only on this study is not possible due to shortened exposure duration.