Registration Dossier
Registration Dossier
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EC number: 278-145-6 | CAS number: 75234-41-2
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
The test item was investigated for its biodegradability in the 28 days Modified Zahn-Wellens test. The test article proved to be degradable by 23 % within 28 days. The standard, Aniline, was degraded within 14 days by 96 %.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
In one key study the test item was investigated for its biodegradability in the 28 days Modified Zahn-Wellens test. The test article proved to be degradable by 23 % within 28 days. The standard, Aniline, was degraded within 14 days by 96 %.
In a second test the test item was investigated for its inherently biodegradability in a 14 days test according to a static method HOECHST No. 4 from November 1973 and a modified OECD method from January 1974. Two tests were done with non-adapted inoculum with initial substance concentrations of 1850 mg/L and 585 mg/L, respectively. In these test elimination of 2 and 23 % DOC removal was found.
A third test was done with adapted sludge with an initial substance concentration of 585 mg/L. No elimination was found after 14 days.
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