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Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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Description of key information

The BCF of diisobutyl phthalate is estimated to be 622.

Key value for chemical safety assessment

BCF (aquatic species):
622 L/kg ww

Additional information

Experimentally determined bioaccumulation data is not available for diisobutyl phthalate. The BCF has therefore been estimated by means of a QSAR.

Calculation of bioconcentration factors to determine the potential for bioaccumulation of chemicals is acceptable provided that a recognised and scientifically robust method is used. The TGD includes two methods for calculation of a BCF QSAR depending on the molecular weight and log Kow. This approach is considered to be acceptable with restrictions.

Based on the experimentally determined log Kow of 4.11, the BCF of diisobutyl phthalate is estimated by the QSAR of Veith and Broderius (1987) to be 622.