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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

The toxicity to algae (Desmodesinus subspicatus) of HDI oligomers, iminooxadiazindione were determined after a period of 72 hours and showed an ErL of 199 mg/L. A NOEC[r] of 50 mg/L and a LOEC [r] of 100 mg/L were calculated.
The results are expressed in terms of effective loadings (EL). Considering the heterogeneous composition of the test item, Water Accornmodated Fractions WAF's) were tested. HDI oligomers, iminooxadiazindione is a mixture of substances and na specific analytical methods are available. The determination of DOC gives an indication of actual concentrations.

Key value for chemical safety assessment

EC50 for freshwater algae:
199 mg/L
EC10 or NOEC for freshwater algae:
50 mg/L

Additional information