Registration Dossier
Registration Dossier
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EC number: 209-691-5 | CAS number: 590-86-3
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
Daphnia magna: Immobilisation: 48-h EC50 = 177 mg/L (no analytical monitoring)
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 177 mg/L
Additional information
Isovaleraldehyde was tested on the waterflea Daphnia magna in a 48-h acute toxicity test under static conditions according to the EU Directive 79/831EEC. This guideline is similar to the recent OECD guideline 202. The test concentrations were not analytically verified. In the highest test concentration (500 mg/L), all test animals were immobilized almost immediately after exposure. In the second highest (250 mg/L) more than 50% were immobilized after 3h and 100% after 48 h. No immobilised animals were observed in the other test concentrations. The 48 -h EC50 was determined to be 177 mg/L.
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