Registration Dossier
Registration Dossier
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EC number: 222-437-8 | CAS number: 3470-98-2
Endpoint summary
Administrative data
Description of key information
Additional information
Based on the results of the Closed Bottle Test, N-Butylpyrrolidone is not readily biodegradable. In a further study to characterise inherent biodegradability (Zahn-Wellens-Test), the degree of biodegradation reached 7 % after 28 days. Mean degradation at the end of the test 81 % (lag-phase day 0 - 35, degradation phase day 36 -112). This test results are further confirmed by the results of a modified MITI Test (II) over a period of 28 days, which showed no biodegradation. Hence the substance can be assigned as ultimately biodegradable.
In the second study on the substance’s inherent biodegradability (modified MITI Test (II)), N-Butylpyrrolidone was found to be completely primary biodegradable after a lag phase of four weeks resulting in 100% degradation after 56 days of incubation.
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