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Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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Description of key information

Based on radioactivity measurements, the bioaccumulation factor was determined to be 40 - 42 L/kg. Uptake and depuration rates were not determined.

Key value for chemical safety assessment

BCF (aquatic species):
42 L/kg ww

Additional information

Separation of the base chlorhexidine and gluconate is expected during uptake in fish. Therefore, probably the BCF of the free chlorhexidine was determined instead of the value of Chlorhexidine digluconate.

The result obtained in the experiment is higher than the calculated BCF value of 1.77 at pH 6-8.

Biomagnification via aquatic food chain is not expected.