Registration Dossier
Registration Dossier
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EC number: 202-228-8 | CAS number: 93-20-9
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
11% biodegradation was observed in the 28 day OECD 301F study, so EC 202-228-8 is not readily biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
The test was conducted in accordance with guideline OECD 301F. The results for EC 202-228-8 show that the test material at a concentration of 20 mg/L attained a maximum mean level of biodegradation (based on the BOD:ThOD ratio) of 11%. Less than 60% degradation was achieved within the 10-day window, so EC 202-228-8 cannot be classified as readily biodegradable. This lack of biodegradation can be in part put down to the fact the EC 202-228-8 is inhibitory to microorganisms as outlined in the OECD 209 study (IUCLID section 6.1.7), which showed the NOEC for inhibition to microorganisms to be <10 mg/L.
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