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Physical & Chemical properties

Partition coefficient

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Description of key information

Based on the determination of the water solubility (0.235 mg/L) and the octanol solubility as determined in this study (>100 kg/L), the logPow of the substance was calculated to be >8.63 (Laus 2015).

Key value for chemical safety assessment

Log Kow (Log Pow):

Additional information

The calculation of the logPow based on the water solubility and octanol solubility is two orders of magnitude above that of the structural analogue DNNSA. This is solely caused by the determination of the solubility in octanol, where for DDNSA higher loading rates were included in the test design. For risk assessment in a worst case approach the lowest value (6.6) is chosen, because this value is most close to the EUSES cut-off value (6).