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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

inherently biodegradable under extended conditions

Key value for chemical safety assessment

Biodegradation in water:
inherently biodegradable

Additional information

The biodegradability of the mixed-Tocopherols (CAS: 1406-66-2) is evaluated on the basis of read across data to DL-alpha-Tocopherol (CAS: 10191-41-0) and/or of the precursor of alpha-Tocopheryl acetate (CAS: 7695-91-2).

There are two aerobic degradation tests for the group of tocopherols and tocopheryl acetates available: One tests was performed with DL-alpha-tocopherol (CAS: 10191-41-0) a stereo according to OECD 301 F protocols and GLP. The test reveals a result of 70 -80% with an extended exposure up to 67d (Givaudan Suisse SA,2011).


A degradation test is further available for DL-alpha-tocopheryl acetate (CAS: 7695-91-2). In an OECD 301C test run over 39days, the biodegradation recorded was 30-40% (BASF,1988b). 

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