Registration Dossier
Registration Dossier
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EC number: 209-193-8 | CAS number: 558-30-5
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
With high probability acutely not harmful to aquatic algae.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 500 mg/L
Additional information
For the hazard assessment of the acute toxicity to fish a read-across to the analogous substance 1,2 -epoxybutane (CAS 106-88-7) was used. Both substances reveal a comparable moelcular structure, are both readiyl biodegradable and revealed EC50 values for the acute toxicity to aquatic invertebrates which lie in the same range. Therefore, the read-across is regarded as valid and no acute test on algae toxicity on 2,2 -dimethyloxiran is performed.
The toxicity of the analogous substance 1,2-epoxybutane on the green algae Selenastrum capricornutum was measured in a test according to German national standards DIN 38412 (BASF 1989). The EC50 (72h) for the growth rate determined to be > 500 mg/L.
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