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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Environmental fate & pathways

Biodegradation in water and sediment: simulation tests

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Administrative data

Link to relevant study record(s)

Referenceopen allclose all

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:
In accordance with column 2 of REACH Annex IX, further degradation testing (required in section 9.2) shall be considered if the chemical safety assessment according to Annex I indicates the need to investigate further the degradation of the substance.
The chemical safety assessment does not indicate a need for further investigation as Synthetic wollastonite is inorganic and considered to be poorly soluble.
Reason / purpose for cross-reference:
data waiving: supporting information
Reason / purpose for cross-reference:
data waiving: supporting information
Reason / purpose for cross-reference:
data waiving: supporting information
Transformation products:
no
Endpoint:
biodegradation in water: sediment simulation testing
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, further degradation testing (required in section 9.2) shall be considered if the chemical safety assessment according to Annex I indicates the need to investigate further the degradation of the substance.
The chemical safety assessment does not indicate a need for further investigation as Synthetic wollastonite is inorganic and considered to be poorly soluble.
Transformation products:
no

Description of key information

Synthetic wollastonite is an inorganic substance that poorly soluble in water. The substance consists of amorphous and crystalline silica which when released into the environment are expected to combine indistinguishably with the soil or sediment due to their similarity with inorganic soil/sediment matter and will be subjected to natural processes under environmental conditions (cation exchange, dissolution, sedimentation).

Key value for chemical safety assessment

Additional information