Registration Dossier
Registration Dossier
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EC number: 201-114-5 | CAS number: 78-40-0
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
In a weight-of evidence approach using three different test systems (ready
biodegradation, inherent biodegradation, QSAR) no relevant biodegradation was observed.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
The biodegradation of the substance was investigated in a modified MITI test corresponding to OECD 301C . The degree of biodegradation by BOD is reported to be 0% (CITI, 1992). The substance triethyl phosphate cannot be considered readily biodegradable.
The biodegradation of the substance was investigated in a Zahn-Wellens test (OECD 302B). 98% biodegradation of the test substance was seen in 21 days under the conditions of this study (Kanne, 1987). As the pass level was not reached after 7 days, this result does not lead to a "inherently biodegradable".
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