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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

Partly biodegradable (not readily biodegradable according to OECD criteria).

Key value for chemical safety assessment

Additional information

In a CO2 evolution test according to OECD guideline 301B the biodegradation of TPGDA was investigated [Cray Valley, 1997]. After 28 days 48 % degradation of TPGDA was determined. Therefore TPGDA is partly biodegradable but not readily biodegradable according to OECD criteria.

The structural related substance DPGDA is readily biodegradable. In a DOC-Die-Away test according to OECD guideline 301A the biodegradation of DPGDA was investigated [BASF AG, 2001]. After 28 days > 90 % degradation of DPGDA was determined. Since DPGDA differs from TPGDA only in a slightly shorter chain length, it can be expected that TPGDA is ultimately biodegradable under environmental conditions.