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Partition coefficient

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Description of key information

log Pow = -2.31 - 1.72 at 20 °C, pH ca. 7-8

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Additional information

The partition coefficient of the substance C8 -10 AS, Na (CAS No. 85338 -42 -7) was obtained as a result of the weight of evidence approach. It was calculated using two independent fragment-based QSAR methods. Additionally, data known for category members C8 AS, Na (CAS No. 142 -31 -4) and C10 AS, Na (CAS No. 142 -87 -0) were used (for the former: calculation based on solubilities in water and n-octanol according to OECD 107; for the latter: slow stirring method, according to OECD 123). The results are consistent: the range obtained with one QSAR method (from -0.27 to 0.71) covers to high extent the range determined by the calculations with the other QSAR method (from -0.12 to 0.96) and these ranges are in the range defined by the read-across results from C8 (-2.31) and C10 (1.72). Temperature and pH are not reported for the QSAR calculations, it is thus assumed that the temperature corresponds to read-across data (20 °C for both substances) and pH is close to neutral (ca. 7) for calculated values and reported as 8 in the experiment with C10.