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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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Diss Factsheets

Ecotoxicological information

Sediment toxicity

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Description of key information

Sediment toxicity:
Conclusion: Results from short-term toxicity studies with analog substances with 2 sediment invertebrates show that DIUP does not cause toxicity at the high concentrations investigated in these tests.

Key value for chemical safety assessment

Additional information

The results of short-term toxicity studies reported as NOEC values for sediment toxicity. The NOEC values from these studies represent the highest concentrations tested and measured under the conditions of the studies.

I5 Summary

The data used to characterize the sediment toxicity of di-isoundecyl phthalate (DIUP) ester are for di-isodecyl phthalate (DIDP) ester and 1,2 -benzenedicarboxylic acid, heptyl undecyl ester, branched and linear (di(heptyl, nonyl, undecyl) phthalate ester (711P), which are analogs to DIUP. Results of studies with these analogs suggest that DIUP will not cause toxicity to sediment dwelling organisms at high levels. Because of the structural similarity between these substances and the similar biological behavior of high molecular weight phthalate esters in general, data for the analogs can be used to characterize the biological effects of DIUP for this endpoint. The sediment toxicity dataset includes results for Chironomus tentans and Hyalella azteca.