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Environmental fate & pathways

Endpoint summary

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A measured BCF is not available for any streams in this category. As the log Kow of some category members is >3 the bioaccumulation endpoint cannot be waived. However, ECHA's Guidance on Information Requirements and Chemical Safety Assessment R7c Endpoint Specific Guidance (2008) indicates that before commissioning a new vertebrate test alternative sources of data on the bioaccumulation potential of a chemical should be used.

Representative components on these streams were identified from the compositional data. The representative components are presented in Section 2.3. The bioaccumulation potential of these substances was compared to the PBT screening criteria for Bioaccumulation in the PBT assessment. For some constituents, experimental data is available or data is reported by the registrants in their dossier.

The Bioconcentration Factor for the representative components in this category have been estimated using the EPISUITE program and based on methodologies developed by Arnot-Gobas et al. (2006). The estimated BCF range based on the Arnot-Gobas method (upper trophic) is 1.742844 - 1678.398 L/kg.

 

The streams in this category are not considered to be bioaccumulative on the basis of the PBT assessment of representative components.

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