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Physical & Chemical properties

Partition coefficient

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Description of key information

The octanol-water partition coefficient for C.I. Direct Blue 264 was calculated according to its definition as quotient of n-octanol and water because the investigation following the standard guidelines was technically not feasible. The partition coefficient is calculated based on the 1-octanol solubility and the water solubility of C.I. Direct Blue 264 determined by HPLC. 
Therefore the calculated octanol-water partition coefficient (log Pow) of C.I. Direct Blue 264 at 20°C is <-0.2 (Pow = 0.7).

Key value for chemical safety assessment

Log Kow (Log Pow):
-0.2
at the temperature of:
20 °C

Additional information

The calculated octanol-water partition coefficient (log Pow) of C.I. Direct Blue 264 at 20°C is <-0.2 (Pow = 0.7).