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Environmental fate & pathways

Adsorption / desorption

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Description of key information

With a logKOC of 5.3 adsorption to solid phase is expected.

Key value for chemical safety assessment

Additional information

The adsorption coefficient was determined in a HPLC screening study according to OECD 106 using O,O,O-triphenylphosphorotioate in a lower purity (purity > 25%)(Fraunhofer-lnstitut für Umweltchemie und Ökotoxikologie, 1997). The KOC of the individual components were investigated and for CAS 597-82-0 determined to be 199526 (logKOC 5.31). This result is supported by EPISUITE estimations resulting in logKOCs of 5.3 (MCI method) and 3.6 (estimated from measured logKow of 5) (BASF SE, 2011). Based on the consensus of MCI methodology and experimental data the logKOC of 5.3 is used for further assessments.