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Environmental fate & pathways

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The concentration of mixed xylene isomers by Salmo gairdneri was determined in a 56 day flow through test (Walsh et al. 1977) and the resulting BCF was calculated to be 25.9.

The xylene isomers have a log Kow in the range of 3.12 to 3.2 and the measured BCF for mixed xylenes is 25.9 L/kg. Therefore, on the basis of the screening and definitive criteria, the xylene isomers are not considered bioaccumulative (B) or very bioaccumulative (vB).