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Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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Description of key information

The potential of cyclohexylamine to accumulate in aquatic organisms is characterized by a calculated BCF of 2.8 and 3.162 for the neutral and protonated form, respectively (Bayer Industry Services, 2006) assuming only a very low potential for bioaccumulation.

Key value for chemical safety assessment

Additional information

Calculated BCF values were used for the hazard assessment of cyclohexylamine despite the fact, that for ionisable substances measured BCF values are preferred over calculated ones. Bioconcentration factors are used to assess the potential to accumulate in aquatic organisms, mainly in the scope of the PBT assessment. Thus, vertebrate-animal testing can be avoided as no additional information is gained through that test. The substance is neither classified as persistent, nor as toxic to aquatic organisms, a measured BCF value would not change the outcome of the PBT assessment.