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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Administrative data

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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