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Environmental fate & pathways

Biodegradation in soil

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Description of key information

Biodegradation is soil

Key value for chemical safety assessment

Half-life in soil:
1 yr
at the temperature of:
20 °C

Additional information

14C-radiolabelled TBBPA-DBPE was applied onto 4 different soils. Soils were incubated at aerobic conditions in the dark up to 121 days. Further sterillized subsamples of each soil were prepared and also treated with the radiolabelled test item at the same time.

Total recovery of radioactivity from the samples was predominantly above 97% of the initial total radioactivity(ITR) in the sterilized subsamples as well as in the non-sterile subsamples. From the recovered radioactivity only minor amounts (3% maximum) were due to non extractable residues which could not be defined by chemical analysis. All the rest was identified as unchanged 14C-TBBPA-DBPE. Volatiles were detected only in trace amounts.

From the results of the study the test item is assessed to be stable against transformation in soils at aerobic conditions.