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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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Diss Factsheets

Environmental fate & pathways

Biodegradation in water: screening tests

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Administrative data

Link to relevant study record(s)

Description of key information

Readily biodegradable: 75% in 28 days (BODIS Test, ISO Draft)

Key value for chemical safety assessment

Additional information

One study evaluating the biodegradation potential of methyl palmitate (CAS No.112-39-0) is available (Börner, 1994). This test was conducted according to ISO Draft (BOD Test for Insoluble Substances), under GLP conditions. Activated sludge was exposed for 28 days to the test substance and biodegradation followed by measuring O2 consumption in the test vessels. After 28 days the test substance reached 75% biodegradation, fulfilling the 14-day window criterion in two of the three replicates (the third replicate reached only 35% degradation after 14 days). Nevertheless, biodegradation values in the third replicate differed more than 20% in comparison to the values in the other two throughout the test (observed in samples collected at 14, 18 and 28 days). Therefore, the results from the third replicate are considered invalid and disregarded for the final biodegradability assessment.

Based on the above information, methyl palmitate can be considered as readily biodegradable.