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Environmental fate & pathways

Adsorption / desorption

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Description of key information

The adsorption of 14C-2,6-DTBP (which is structurally similar to 2,4-DTBP) was tested in batch equilibrium studies using three sediment types (EPA-5, EPA-8, and EPA15).  14C-2,6-DTBP was shown to be stable during the 112 hour equilibration period, as determined by high performance liquid chromatographic (HPLC) analysis of the adsorption supernatant from a test replicate. The results indicated that the adsorption characteristics were similar among the three sediment types tested. The adsorption constants based upon the organic carbon content ranged from 2570 to 6960. There was little apparent correlation of adsorption constant with sediment texture, organic matter, cation exchange capacity or pH. 

Key value for chemical safety assessment

Koc at 20 °C:
4 493

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