Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Link to relevant study record(s)

activated sludge respiration inhibition testing
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
the study does not need to be conducted because the substance is highly insoluble in water, hence indicating that aquatic toxicity is unlikely to occur

Description of key information

In accordance with column 2 of REACH Annex VIII, the activated sludge respiration inhibition test does not need to be conducted as there are mitigating factors indicating that microbial toxicity is unlikely to occur. With regard to a study according to OECD 29, for TiN a water solubility of 23.8 µg Ti/L (100 mg loading, pH 6, 7 days) was determined. In addition, under the conditions of OECD guidelines 201, 202 and 203, respectively, measured Ti concentrations were below 2 µg/L at test initiation and at test termination in all control and test exposures. Based on water solubility limitations, tests on toxicity against microorganisms are scientifically not justified.

Key value for chemical safety assessment

Additional information