Registration Dossier
Registration Dossier
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EC number: - | CAS number: -
Endpoint summary
Administrative data
Description of key information
Ready biodegradability:
The test item was investigated for its ready biodegradability in a manometric respirometry test according to the OECD Guideline for Testing of Chemicals, No. 301F and EU-Method C.4-D. The test was performed in closed vessels containing a known concentration of test item (100 mg test item/L giving 82 mg Theoretical Oxygen Demand/L) incubated at constant temperature (23 °C) for 28 days. The Biochemical Oxygen Demand (BOD) of the test item in the test media significantly increased from the test start until approximately day 7 of incubation, where biodegradation reached a mean value of 27 % (average of two replicates). Afterwards the biodegradation values remained in a plateau phase, with mean values in the range of 27 % to 31 %, until the end of the test, on day 28, when the mean biodegradation value amounted to 30 %. At the end of the 10-day window, the mean biodegradation of the test item reached approximately 28 %. Therefore, the pass level for ready biodegradability, i.e. biodegradation of at least 60 % of the ThOD in a 10-day window within a 28-day period of the test, was not reached. In conclusion the test item was considered as not readily biodegradable under the test conditions within 28 days.
Additional information
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