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Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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Description of key information

The BCF of MTBE as determined in Japanese carp is 1.5

Key value for chemical safety assessment

BCF (aquatic species):
1.5

Additional information

Whole-body bioconcentration factors (BCFs) of 1.5 and 1.4 were reported for Japanese carp exposed to 10 and 80 mg/l MTBE in a flow-through system at 25 ºC. Fish which were exposed for 28 days and then transferred to clean water eliminated almost all MTBE residue within 3 days (Fujiwara et al., 1984). The BCFs indicate a low potential for bioconcentration. The BCF of 1.5 is used in the assessment.