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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Diss Factsheets

Ecotoxicological information

Sediment toxicity

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
sediment toxicity: long-term
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
other:

Description of key information

The performance of the sediment toxicity test was scientifically not justified.

Key value for chemical safety assessment

Additional information

In accordance to Column 2 REACH Annex X 9.5.1, long-term toxicity to sediment organisms, can be waived as the results of the chemical safety assessment do not indicate the need to investigate further the effects of the relevant degradation products on sediment organisms. Upon contact with water or water vapour substances of the Persulfate Category hydrolyse into cation and persulfate anion. Hydrolysis is temperature and pH dependent. Decomposition rates increase with decreasing pH value and increasing temperature. The persulfate anion, independent of the cation, undergoes further decomposition in normal water or acid conditions, readily oxidising water to oxygen, producing sulphate and hydrogen ions. All persulfate decomposition products are ubiquitous to the environment. Hydrolysis is metal catalysed, and rapid reaction with organic matter is also possible. Thus persulfates are not expected to be distributed into the sediment and consequently, also not to cause toxicity to sediment organisms. Therefore, long-term toxicity testing of sediment organisms is scientifically not justified.