Registration Dossier
Registration Dossier
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EC number: 207-837-2 | CAS number: 497-18-7
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
The test substance was degraded 100% after 28 days. Based on this the test material has a potential for biodegradation in the marine environment. This marine biodegradation is also considered relevant for freshwater.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
Biodegradation testing was performed on the test substance R-2581 (Carbohydrazide) based on OECD Guideline 306 "Biodegradability in Seawater - Closed Bottle Test".
According to OECD 306, a test is considered valid if the percentage degradation of the reference substance (inoculum control) has reached the level of 50% within 5 days (the lag phase not included) and the blank respiration has not exceeded 30% of the oxygen in the test bottle. In this test the activity of the inoculum was satisfactory. The inoculum control was degraded by 66% within 5 days, ie the test is considered valid. Moreover, the oxygen depletion in the inoculum blank did not exceed 30% of the oxygen in the test bottle.
A test substance has a potential for biodegradation in the marine environment if it has been degraded ≥ 60% within 28 days.
The test substance was degraded 100% after 28 days. Based on this the test material has a potential for biodegradation in the marine environment.
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