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Environmental fate & pathways

Biodegradation in water: screening tests

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Administrative data

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Description of key information

Readily biodegradable according to OECD criteria: 95% after 28 days based on CO2 evolution (OECD 301 B).

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

All substances in the alkyl sulfate category were found to be readily biodegradable.

The ready biodegradability of C12AS Na salts was tested in two aerobic studies. As key study an OECD 301 B study conducted under GLP performed in 2005 (Elementis 2005) was chosen. After 10 days of exposure 81.5% of the test substance were already degraded, after 28 days 95% of the test substance were mineralised. Therefore the test substance is readily biodegradable according to OECD criteria. The ready biodegradability is supported by a study conducted by BASF in 1996. In this OECD 301 D GLP test the biodegradation was found to be 94 - 97% after 28 days. It can be concluded that the substance is readily biodegradable.