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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 so BCF values have been calculated for representative components of the streams in this category. Nonpolar substances have been shown to have a linear relationship between log Kow and BCF in the log Kow range 1 - 6 and several QSAR 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). Parabolic method has been used to calculate a BCF for substances with a log Kow >6.

Using the US EPA (2008) model, the calculated BCF values for representative components of the streams in this category are in the range 4 - 2010. Using the Veith et al (1979) method, the calculated BCF for representative components of the streams in this category are in the range 4.9 - 552.