Registration Dossier

Ecotoxicological information

Short-term toxicity to fish

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Administrative data

Link to relevant study record(s)

Description of key information

The acute toxicity of 1,3-dihydro-4(or 5)-methyl-2H-benzimidazole-2-thione to fish (Danio rerio) was tested according to "Letale Wirkung beim Zebrabärbling -Brachydanio rerio-" (LC0 , LC50 , LC100; 48-96 Stunden) Verfahrensvorschlag: Umweltbundesamt Berlin, Stand Mai 1984. During 96 hours exposure the LC0 was measured at 22 mg/L and LC100 at 63 mg/L; and goemetric mean LC0/LC100 was calculated at 37.2 mg/L.

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
37.2 mg/L

Additional information

Read-across appears to be justified as the substance to be registered and the read-across substance are identical in structure. The substance to be registered is the salt of the read across substance.