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Environmental fate & pathways

Adsorption / desorption

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Description of key information

Kow method:
Koc: 412.8
logKoc: 2.616

Key value for chemical safety assessment

Koc at 20 °C:

Additional information

Koc of Direct Red 81 was calculated using EpiSuite 4.1., the suite of physical/chemical property and environmental fate estimation programs developed by the EPA’s Office of Pollution Prevention Toxics and Syracuse Research Corporation (SRC).

DRed81 is expected to be a substance with a low potential for adsorption, as confirmed by the partition coefficient log Kow of -2.05 (R&C, 2012).

Based on REACH regulation annex VIII column 2 (specific rules for adaptation from column 1) the study need not be conducted based on the physicochemical properties the substance can be expected to have a low potential for adsorption (e.g. the substance has a low octanol water partition coefficient).

[LogKoc: 2.616]