Registration Dossier
Registration Dossier
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EC number: 204-288-0 | CAS number: 118-93-4
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
The substance is readily biodegradable (according to OECD criteria).
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
The assessment of the biodegradability of 2'-hydroxyacetophenone (CAS 118-93-4) is based on an OECD 301B (CO2 evolution test) GLP guideline study using non-adapted activated sludge as inoculum (Hoechst Celanese Corp., 1996). After 28 days, biodegradation was 90% (mean value of 86.7 % and 93.2 % degradation, in the two tested concentrations, respectively; the ten-day window was met.
In addition, 2'-hydroxyacetophenone was tested in a static OECD 302B Zahn-Wellens test. Activated sludge was treated with the test substance and degradation was determined measurement of the amount of solved carbon (DOC); biodegradation was 95% after 13 days indicating the substance to be inherently biodegradable.
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