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Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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Description of key information

No experimental data on bioaccumulation are available for acetonitrile. Calculated values based on Kow are in the range of 0.3 - 0.4.  Based on these results, low Kow values and high water solubility very low bioaccumulation potential is expected.

Key value for chemical safety assessment

Additional information

An estimated BCF of 3 was calculated for acetonitrile using a log Kow of -0.34 (Hansch, 1995) and a regression-derived equation (Meylan, 1999). This bioconcentration factor is in agreement with other calculated values which are in the range of 0.3-0.4 (EPA; 1991). These values, in combination with low KOC values and high water solubility indicate that bioconcentration in aquatic organism is unlikely to be an important factor in the environmental fate of acetonitrile.

US EPA BCFWIN software (v2.17) generated an estimated BCF of 3.162 for acetonitrile based on the experimental log Kow of -0.34.