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EC number: 700-323-3 | CAS number: 908020-52-0
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
EEA-NH4 is characterised as “not readily biodegradable”.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
The biodegradation of EEA-NH4 by microorganisms was studied in accordance with OECD guideline 301C: Ready Biodegradability: Modified MITI Test (I) (Kurume Laboratory, 2005).
In this GLP-compliant study 30 mg/L activated sludge (prepared from samples taken from industrial and city sewage treatment plants, surface water and surface soil) was exposed to 100 mg/L EEA-NH4 for 28 days. Controls used were: 1. purified water with test substance, 2. activated sludge without test substance and 3. activated sludge exposed to aniline. After 7, 14, 21 and 28 days the removal of dissolved organic carbon (DOC) and biochemical oxygen demand (BOD) were calculated. In addition, the concentrations of test substance were analysed with high performance liquid chromatography (HPLC).
Based on the calculated percentages of biodegradation by BOD of 12% and by COD of 8% (both averages of 3 replicates) the test item was concluded not to be biodegraded by microorganisms under the test conditions applied.Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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