Registration Dossier
Registration Dossier
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EC number: 221-337-1 | CAS number: 3069-33-8
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
The substance is not readily biodegradable according to OECD criteria.
Key value for chemical safety assessment
Additional information
The key study of LPT (2003) was performend according to OECD 301D and GLP. Under the present test conditions, the substance was biodegraded by an average of 11 .1 % over the 28-day exposure period to a secondary effluent from a domestic sewage treatment plant. The criterion for ready biodegradability (at least 60% biodegradation was not reached within ten days of biodegradation exceeding 10%) was not met. On the other hand, the reference compound sodium acetate was biodegraded by an average of 67.5 % by exposure day 14 and reached an average biodegradation rate of 66.0% by the end of the 28-day exposure period, thus confirming suitability of the secondary effluent. The test substance did not inhibit the inoculum in the toxicity control.In conclusion, the substance was not readily biodegradable under the conditions of the
'Closed Bottle Test' presently performed.
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