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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicity to terrestrial plants

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
toxicity to terrestrial plants: long-term
Data waiving:
study technically not feasible
Justification for data waiving:
other:

Description of key information

This endpoint has been waived for "Neutralisation and reduction products of bauxite residue from refinement process" based on REACH Annex XI, section 2, “testing for a specific endpoint may be omitted, if it is technically not possible to conduct the study as a consequence of the properties of the substance”. The OECD guideline 208 for testing of chemicals on terrestrial plants requires adequate water solubility for the substance. However, "Neutralisation and reduction products of bauxite residue from refinement process" is poorly soluble in water and it is an inorganic substance that cannot be dissolved in an organic solvent. Furthermore, aluminium which is the major element released from "Neutralisation and reduction products of bauxite residue from refinement process" is an integral part of the eath crust and ubiquitous in nature. Hence, the substance is not expected to make significant contribution to the existing background levels of the released elements in the soil. 

Key value for chemical safety assessment

Additional information

As aluminium is an integral part of the soil mineral matrix and is furthermore the most abundant metallic element, comprising 8 % of the earth crust, this endpoint has been waived for aluminium. In addition, it is a major component of almost all common inorganic soil particles. Dissolved aluminium is present in soil pore water at very low concentrations, varying with pH. This is common textbook knowledge, not requiring further elaboration. In view of the high natural abundance of aluminium in the soil matrix the hypothetical contribution of releases from "Neutralisation and reduction products of bauxite residue from refinement process" to Al concentrations in soil can be considered to be negligible by qualitative assessment. Hazards to terrestrial organisms due to Aluminium in "Neutralisation and reduction products of bauxite residue from refinement process" hence can be excluded.