Registration Dossier
Registration Dossier
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EC number: 261-530-8 | CAS number: 58976-65-1
Biodegradation in water and sediment: simulation tests
Administrative data
Link to relevant study record(s)
Description of key information
Removal of GLDA-H4 in biological treatment plants: >95% after 14 days (OECD TG 303A).
Based on the CBT with seawater, this substance should be classified as inherently and ultimately biodegradable in seawater.
Key value for chemical safety assessment
Additional information
A simulation test on the biodegradation of the test substance in an activated sludge plant treating domestic waste water (CAS test) with reliability 2 is available for GLDA-H4. This test showed a removal percentage of >95 from day 14 until the end of the test (day 29).
In order to assess the biotic degradation of the read across substance GLDA-Na4 in seawater, a biodegradability test (OECD 306) was performed. GLDA-Na4 was biodegraded 26% in the Closed bottle test at day 28. In the prolonged Closed Bottle test this substance was biodegraded 83% at day 60. The biodegradation reached at day 60 of the test, demonstrates that GLDA should be classified as inherently and ultimately biodegradable in seawater. These biodegradation percentages were calculated on the assumption that the test substance was converted to water, carbon dioxide and nitrate.
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