Registration Dossier
Registration Dossier
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EC number: 500-099-5 | CAS number: 37625-56-2
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
The test substance ε-Caprolactone, oligomeric reaction products with propylidynetrimethanol is readily biodegradable at a concentration of 33 mg/L but does not pass the 10 day window.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
A GLP study was conducted to OECD guideline 301B (CO2 evolution). Municiple activated sewage sludge was used at a content of 30mg dry matter/L. The reference substance was 86% degraded after 28days and was not significantly inhibited by the test substance thereby validating the test.
The mean biodegradation of the test substance (ca 33 mg/L) first exceeded 10% after 3 days but did not exceed 60% (pass level for CO2 evolution test) after 13 days and therefore the 10 day window was not passed. However, the 60% pass level was exceeded within the 28 day test and therefore Capa oligomer can be considered as readily biodegradable.
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