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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
toxicity to soil microorganisms
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 IX, section 9.4, the effects on soil microorganisms study (required in section 9.4.2) does not need to be conducted since direct and indirect exposure of the soil compartment is unlikely. This understanding is confirmed in the TDp test (IUCLID section 5.6). Here, manganese 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 matrix is predicted to bind strongly to soil and sediments. On this basis the bioavailable concentration of Mn from the substance to terrestrial organisms is predicted to be less than the background concentration of manganese in European soils (428.6 mg Mn/kg, according to “Probabilistic Distribution of Manganese in European Surface Water, Sediment and Soil and Derivation of Predicted Environmental Concentrations (PEC)”, Parametrix, 2009 and supported by GEMAS data). Furthermore, the substance is not classified as hazardous for environmental effects and the available data are adequate for classification and labelling purposes. Moreover, a PBT assessment is not required for inorganic substances so no further testing is required.

Description of key information

In accordance with Column 2 of REACH, Annex IX, section 9.4, the effects on soil microorganisms study (required in section 9.4.2) does not need to be conducted since direct and indirect exposure of the soil compartment is unlikely. This understanding is confirmed in the TDp test (IUCLID section 5.6). Here, manganese 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 matrix is predicted to bind strongly to soil and sediments. On this basis the bioavailable concentration of Mn from the substance to terrestrial organisms is predicted to be less than the background concentration of manganese in European soils (428.6 mg Mn/kg, according to “Probabilistic Distribution of Manganese in European Surface Water, Sediment and Soil and Derivation of Predicted Environmental Concentrations (PEC)”, Parametrix, 2009 and supported by GEMAS data). Furthermore, the substance is not classified as hazardous for environmental effects and the available data are adequate for classification and labelling purposes. Moreover, a PBT assessment is not required for inorganic substances so no further testing is required.

Key value for chemical safety assessment

Additional information