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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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:
Justification for type of information:
In accordance with Column 2 of REACH Annex X, the long-term toxicity to sediment organisms (required in section 9.5.1.) does not need to be conducted as the results of the chemical safety assessment do not indicate the need to investigate further the effects of the substance on sediment organisms. The substance is not classified as hazardous for environmental effects and the available data are adequate for classification and labelling purposes. Furthermore, a PBT assessment is not required for inorganic substances so no further testing is required. This understanding is confirmed in the TDp test (IUCLID section 5.6). Here, one of the components (manganese) within the compound is only seen at a concentration of 15.9 µg/L (after 28 days from 1 mg/L loading). Since the registered substance is a metal oxide, any ionic metal leaching out of this compound (considered very unlikely) is predicted to bind strongly to soil and sediments. On this basis the bioavailable concentration of Mn from manganese dioxide to sediment dwelling organisms is predicted to be much less than the background concentration of manganese in European sediments (452 mg Mn/kg).

Description of key information

In accordance with Column 2 of REACH Annex X, the long-term toxicity to sediment organisms (required in section 9.5.1.) does not need to be conducted as the results of the chemical safety assessment do not indicate the need to investigate further the effects of the substance on sediment organisms. The substance is not classified as hazardous for environmental effects and the available data are adequate for classification and labelling purposes. Furthermore, a PBT assessment is not required for inorganic substances so no further testing is required.  This understanding is confirmed in the TDp test (IUCLID section 5.6). Here, one of the components (manganese) within the compound is only seen at a concentration of 15.9 µg/L (after 28 days from 1 mg/L loading). Since the registered substance is a metal oxide, any ionic metal leaching out of this compound (considered very unlikely) is predicted to bind strongly to soil and sediments. On this basis the bioavailable concentration of Mn from manganese dioxide to sediment dwelling organisms is predicted to be much less than the background concentration of manganese in European sediments (452 mg Mn/kg).

Key value for chemical safety assessment

Additional information