Registration Dossier
Registration Dossier
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EC number: 280-445-7 | CAS number: 83411-71-6
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
LC50 (96h, Salmo Gairdneri) > 22 mg/l (nominal)
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Effect concentration:
- 22 mg/L
Additional information
The toxic potential of the substance to fish was evaluated in two studies conducted according to " Method for acute toxicity test with fish, microinvertebrates and amphibians (US EPA 1975)"
In the key study, Salmo Gairdneri were exposed to test material at nominal concentrations of 0, 1.7, 4.7, 7.7, 13, 22 and 36 mg A.I. /L under static conditions for 96 hours.
The 96-h LC50was found as >22 mg/l. However, as globules of undissolved test material were formed on the surface throughout the exposure period, the effects observed could also be attributed to physical effects.
In the supporting study, Lepomis Macrochirus were exposed to the test material at nominal concentrations of 0, 23, 22, 36, 60 and 100 mg A.I. /l under static conditions for 96 hours.
The 96-h LC50was > 46 mg/l. Globules of undissolved test material were formed on the surface also in this case, throught the exposure period.
EC50 values are higher than the solubility of the substance in water. Both studies are leading to the same conclusion.
No analytical monitoring was performed in none of the studies, while in the supporting study a problem with the dissolved oxygen occurred at 96 -hour (8 % of satured oxygen in high dose jar and under 60 % of satured oxygen in control group). in both cases the test material formed small globule at the surface
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