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Environmental fate & pathways

Biodegradation in water and sediment: simulation tests

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Endpoint:
biodegradation in water: simulation testing on ultimate degradation in surface water
Data waiving:
study technically not feasible
Justification for data waiving:
the study does not need to be conducted because the substance is highly insoluble in water
Justification for type of information:
The substance is inorganic and inorganic substances do not (normally) meet a biotic degradation.
In accordance with column 2 of REACH Annex IX, there is no need to investigate further the degradation of the substance and its degradation products. Indeed, barium hexaferrite is almost insoluble in water. Since the substance exists only in crystalline form as solid substance no interaction to surface water environment is expected. Due to its high density, Potassium hexatitanate is expected to be deposited on the ground of environmental waters.
Reason / purpose:
data waiving: supporting information
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 309 (Aerobic Mineralisation in Surface Water - Simulation Biodegradation Test)
Deviations:
not specified
GLP compliance:
not specified
Endpoint:
biodegradation in water: sediment simulation testing
Data waiving:
study technically not feasible
Justification for data waiving:
the study does not need to be conducted because the substance is highly insoluble in water
Justification for type of information:
The substance is inorganic and inorganic substances do not (normally) meet a biotic degradation.
In accordance with column 2 of REACH Annex IX, there is no need to investigate further the degradation of the substance and its degradation products. Indeed, barium hexaferrite is almost insoluble in water. Since the substance exists only in crystalline form as solid substance no interaction to surface water environment is expected. Due to its high density, Potassium hexatitanate is expected to be deposited on the ground of environmental waters.
Reason / purpose:
data waiving: supporting information
Qualifier:
equivalent or similar to
Guideline:
EU Method C.24 (Aerobic and Anaerobic Transformation in Aquatic Sediment Systems)
Deviations:
not specified
GLP compliance:
not specified
Endpoint:
biodegradation in water: sewage treatment simulation testing
Remarks:
The selection of the end-point is in accordance to Validation Assistant Wizard. The waived information are related to the Identification of degradation products. It is a data waiving related to 9.2.1.4 Annex IX
Data waiving:
study technically not feasible
Justification for data waiving:
the study does not need to be conducted because the substance is highly insoluble in water
Justification for type of information:
The substance is inorganic and inorganic substances do not (normally) meet a biotic degradation.
In accordance with column 2 of REACH Annex IX, there is no need to investigate further the degradation of the substance and its degradation products. Indeed, barium hexaferrite is almost insoluble in water. Since the substance exists only in crystalline form as solid substance no interaction to surface water environment is expected. Due to its high density, Potassium hexatitanate is expected to be deposited on the ground of environmental waters.
Reason / purpose:
data waiving: supporting information

Description of key information

The studies were judged as not feasible beacuse the substance is (i) inorganic (so, it does not have a biotic degradation) and (ii) higjly insolubile in water.

Key value for chemical safety assessment

Additional information