Registration Dossier
Registration Dossier
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EC number: 204-683-8 | CAS number: 124-13-0
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
The 48-hour EC50 for the read-across substance nonanal was found to be 1.54 mg/l.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Effect concentration:
- 1.54 mg/L
Additional information
Acute invertebrate studies are available for the read-across substances heptanal and nonanal. As the nonanal study has the lowest EC50, this is used for risk assessment purposes.
Acute toxicity of Heptanal to Daphnia magna
An OECD 202 test was conducted to determine the acute toxicity of heptanal toDaphnia magna.Nominal test concentrations were 2.6, 4.4, 7.2, 12 and 20 mg/L. The test was performed at 20 ± 1oC with five concentrations of test substance, a control, and a solvent control. The numbers of surviving organisms, the occurrence of immobility and sub-lethal effects, and the presence of insoluble material were determined visually and recorded after 0, 24, and 48 hours.
The 48-hour EC50 of heptanal to daphnia is 4.13 mg/l.
Acute toxicity of Nonanal to Daphnia magna
A 48 -hour OECD 202 acuteDaphnia magnastudy was conducted for nonanal. Nominal concentrations of nonanal were 0 (control and solvent control), 0.78, 1.3, 2.2, 3.6, and 6.0 mg/L. Mean measured concentrations ranged from 41 to 59% of nominal concentrations and they were steady throughout the test. The test animals (10 per replicate) were incubated in 1 litre glass beakers.
Duplicate vessels were prepared for the control, solvent control (0.1 mL/L dimethylformamide) and test solutions.
The numbers of surviving organisms, the occurrence of immobility and sub-lethal effects, and the presence of insoluble material were determined visually and recorded after 0, 24, and 48 hours.
The 48-hour EC50 was determined ot be 1.54 mg/l, while the NOEC was found to be 0.706 mg/l.
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