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EC number: 205-582-1 | CAS number: 143-07-7
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
The test substance, lauric acid, is readily biodegradable.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
Two
biodegradability tests available for lauric acid, demonstrate that the
substance is readily biodegradable.Richterich
and Mühlenberg (2001) conducted a closed bottle test according to OECD
301D. Under the test conditions 86% of the test substance was degraded
at a substance concentration of 2 mg/L and 62% at 5 mg/L, respectively.
The criterion for ready biodegradability, the 10-day window, was met.
In the short summary of Geisel and Berger (1998), the biodegradability
was tested according to EU Method C.4 –E. The test also showed lauric
acid to be readily biodegradable (85% within 30d at 2 mg/L of test
substance and > 55% at 5 mg/L of test substance, passing 10-day
window). The substance, lauric acid, is thus not expected to persist in
the environment.
This judgment is consistent with the hazard assessment presented in the
OECD SIDS (2009) for the category “Aliphatic Acids Category” where
aliphatic fatty acids with a carbon chain length in the range of C8 –
C22 were judged to be readily biodegradable.
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