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Environmental fate & pathways

Adsorption / desorption

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Description of key information

The estimated organic carbon-normalized adsorption coefficient (log Koc) is 2.07, which indicates a low potential for adsorption to and accumulation in sewage sludge, soil, and aquatic sediments.  

Key value for chemical safety assessment

Koc at 20 °C:
117

Additional information

The Log Koc value for DIBK was estimated based on its chromatographic retention time in a standard HPLC assay following the OECD 121 guideline. The test substance eluted as a single chromatographic peak, having a retention time of 3.03 minutes, which correlates to an estimated log Koc of 2.07. The predicted log Koc of 2.07 indicates a low potential for adsorption to, and accumulation in, sewage sludge, soil, and aquatic sediments. This potential for adsorption and accumulation is further reduced by the potential for rapid and complete biodegradation of the readily biodegradable substance.