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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

The biodegradation of Tri-C18-22 (even numbered)-alkyl 2-hydroxypropane-1,2,3-tricarboxylate

was not specifically determined. However, data are available for a structurally related substance Tri (hexyl, octyl, decyl) citrate with the only difference in shorter carbon chain ester groups. The substance exhibited up to 67% biodegradation after 28 d in a ready biodegradability test. The biodegradation of the test substance reached 51% at the end of the 10-d window. But for UVCB substances the 10-day window condition should not be applied. In a study on inherent biodegradability the pass level of 70% was reached. The substance can be considered as readily biodegradable.