Registration Dossier
Registration Dossier
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EC number: 238-372-3 | CAS number: 14402-88-1
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Key study is the study by van Ginkel & Stroo (1999) with the test substance EDTA-CaNa2 according to guideline. Three types of natural waters were used and showed high degradation percentages after prolonged test durations.
Key value for chemical safety assessment
- Biodegradation in water:
- inherently biodegradable
Additional information
According to the EU RAR (2004) for EDTA:
Results obtained at a pH of 8 could be relevant because the pH value of lake and river water ranges from 7.7 to 8.5. However, in surface waters EDTA is preferably complexed with heavy metal ions. Regarding the degradation tests with metal chelates, no substantial biological degradation is expected, especially for those with a high stability constant.
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