Registration Dossier
Registration Dossier
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EC number: 700-321-2 | CAS number: -
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Reaction product of 2-hydroxybenzoic acid, styrene and oxozinc was tested for ready biodegradability in a Closed Bottle test according to EU method C.4-E and OECD guideline 301 D. The test item was considered not readily biodegradable. The degree of biodegradation reached 15 % after 28 days. The 10d-window started on day 21, degradation was below the pass level of 60 % based on oxygen consumption at the end of the test.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
Reaction product of 2-hydroxybenzoic acid, styrene and oxozinc was tested for ready biodegradability in a Closed Bottle test according to EU method C.4-E and OECD guideline 301 D. Under the test conditions the percentage biodegradation of the test substance reached a mean of 15.0 % after 28 days based on the measured COD of the test item. According to the test guidelines the pass level for ready biodegradability is removal of 60 % COD. The 10d-window started on day 21, degradation was below the pass level of 60 % based on oxygen consumption at the end of the test. Thus, Reaction product of 2-hydroxybenzoic acid, styrene and oxozinc can be considered as not ready biodegradable.
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