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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Long-term toxicity to fish

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Administrative data

Link to relevant study record(s)

Description of key information

Key value for chemical safety assessment

Additional information

In Annex IX of Regulation (EC) No 1907/2006, it is laid down that long-term toxicity testing shall be proposed by the registrant if the chemical safety assessment indicates the need to investigate further the effects on aquatic organisms. According to Annex I of this regulation, the chemical safety assessment triggers further action when the substance or the preparation meets the criteria for classification as dangerous according to Directive 67/548/EEC or Directive 1999/45/EC or is assessed to be a PBT or vPvB.

The hazard assessment of potassium iron oxide reveals neither a need to classify the substance as dangerous for the environment, nor is it a PBT or vPvB substance. Therefore, and for reasons of animal welfare, a long-term toxicity study in fish is not provided.

In spite of the fact that hydrolysis is unlikely to be a significant pathway for the breakdown of potassium ferrite, the chronic toxicity of KOH and Fe2O3 has been additionally examined. KOH is a strong alkaline substance that dissociates completely in water to K+ and OH+ [OECD SIDS 2002]. Therefore, the only possible effects would result from the pH effect which, however, will remain between environmentally expected ranges. Concerning the long-term toxicity of Fe2O3 a study is not available. However, natural baseline iron concentrations in the aquatic environment are already much higher than the reported saturation concentrations of iron oxides in the environment [ARCHE 2010]. As such it is unlikely that iron ions released from iron oxides would inhibit growth and proliferation of aquatic plants, animals or microorganisms.