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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Bioaccumulation: aquatic / sediment

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Administrative data

Link to relevant study record(s)

Description of key information

BCF have been calculated for various representative components of these streams. The calculated values range from 39 to 18220 (USEPA 2008) and 57.5 to 162181 (Veith 1979).

Key value for chemical safety assessment

BCF (aquatic species):
45 124.4 dimensionless

Additional information

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 tests, alternative sources of data on the bioaccumulation potential of a chemical should used.

Non-polar substances have been shown to have a linear relationship between log Kow and BCF in the log Kow range 1 - 6. Several QSAR models have been developed that calculate the BCF of non-polar, hydrophobic compounds on the basis of their log Kow (e.g. Veith et al, 1979 and USEPA, 2008). The most of the substances in streams of this category fall within the applicability domain of these models. For the substance with a log Kow >6, a parabolic method has been used for calculation.

The key value has been completed using the mean of the stated range: 45124.4.