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Environmental fate & pathways

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No bioaccumulation study is available for LAS-IPA. The endpoint of bioaccumulation was addressed with data for LAS-Na and IPA (see read-across statement).

The experimentally determined BCF of LAS-Na is 2 - 1000 L/kg (depending on alkyl chain length); estimated BCF for IPA is < 10. In the bioaccumulation study with LAS-Na it was shown that BCFs increased with the length of the alkyl chain for C10 to C13.The BCF of LAS-IPA will be well below 1000 L/kg, since the C-chain length of the constituents of LAS-IPA is more or less equally distributed over the C10, C11, C12 and C13 constituents, with the C11 and C12 components most abundant. Additonally it was shown in the article by Tolls et al. (1997) that the BCF decreases with the p-sulfophenyl moiety being positioned further away from the terminal carbon of the alkyl chain, which supports a lower BCF of LAS-IPA as well, based on its composition with the p-sulfophenyl moiety on the C4 position mainly. In fact, only for C13-LAS with the p-sulfophenyl moiety positioned at the C2 position a BCF higher than 500 L/kg was observed, so the BCF for LAS-IPA will be below 500 L/kg.

It can be concluded that the bioconcentration potential of LAS-IPA is low.