Registration Dossier
Registration Dossier
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EC number: 272-805-7 | CAS number: 68912-13-0
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
The acute toxicity of Cyclaprop towards Pimephales promelas was investigated according to OECD guideline 203 under GLP. Fish were exposed to nominal concentrations of 2.4, 5.3, 12, 25 and 56 mg/l under flow-through conditions and observed for 96 hours. Based on mean measured concentrations, the 96h-LC50 was found to be 6.7 mg/l. The test concentrations where oily-slick was observed coincide with the concentrations at which mortality was found. Physical hindrance may therefore have contributed to the effects found. It is however, difficult to make a distinction between physical and systemic effects and therefore as a worst case approach the mortality is assumed to result from systemic toxicity.
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Effect concentration:
- 6.7 mg/L
Additional information
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