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Registration Dossier
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EC number: 701-219-0 | CAS number: 15174-47-7
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
In an OECD 202 Acute Immobilisation, the 48-hour EC50 of methyl cinnamic aldehyde alpha (cyprinal) was determined to be 9.9 mg/L in Daphnia magna.
Data from an OECD 202 acute immobilisation study on hexylcinnamaldehyde has also been provided to support the read-across of long-term toxicity to daphnia and short-term toxicity to fish data from hexylcinnamaldehyde to (2E)-2 -methyl-3 -phenylacrylaldehyde.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Dose descriptor:
- EC50
- Remarks:
- immobilisation
- Effect concentration:
- 9.9 mg/L
Additional information
In a key Daphnia magna acute immobilisation test conducted according to OECD Guideline 202 (Bayer, 1999), daphnids (20/concentration) were exposed to the test material (Methyl cinnamic aldehyde alpha; CAS# 101-39-3) at concentrations of 0, 0.5, 1.0, 2.0, 4.0, 8.0, 16, or 32 mg/L for a period of 48 hours in a static system.
The number of immobile daphnids were observed after 24 and 48 hours post-exposure.
Based on the results observed, the 48-hour EC50 of methyl cinnamic aldehyde alpha was determined to be 9.9 mg/L in Daphnia magna.
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