Registration Dossier

Diss Factsheets

Environmental fate & pathways

Biodegradation in water and sediment: simulation tests

Currently viewing:

Administrative data

Link to relevant study record(s)

Referenceopen allclose all

Endpoint:
biodegradation in water: sediment simulation testing
Data waiving:
other justification
Justification for data waiving:
other:
Justification for type of information:
Data waiving
Reason: The process of biodegradation is not a relevant fate pathway for inorganic metal elements such as tungsten metal.
Justification: In accordance with column 2 of REACH Annex VII, a test for ready biodegradability does not need to be conducted as the substance is inorganic. Further biotic degradation testing is not necessary so long as the Chemical Safety Assessment, conducted according to Annex I, does not indicate that it is required. The process of biodegradation is not a relevant fate pathway for inorganic tungsten compounds such as this substance.
Transformation products:
no
Endpoint:
biodegradation in water: simulation testing on ultimate degradation in surface water
Data waiving:
study technically not feasible
Justification for data waiving:
other:
Transformation products:
no

Description of key information

Data waiving

Reason: The process of biodegradation is not a relevant fate pathway for inorganic metal elements such as tungsten.

Justification: In accordance with column 2 of REACH Annex VII, a test for ready biodegradability does not need to be conducted as the substance is inorganic.  Further biotic degradation testing is not necessary so long as the Chemical Safety Assessment, conducted according to Annex I, does not indicate that it is required. The process of biodegradation is not a relevant fate pathway for inorganic tungsten compounds such as this substance.  

Key value for chemical safety assessment

Additional information