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Environmental fate & pathways

Adsorption / desorption

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Description of key information

The Log Koc and Koc of OS9600 should be understood based on its degradation product MPKO since it undergoes rapid hydrolysis (half-life < 1h) and the study is not technically feasible. The koc and log of MPKO was <20.9 and <1.32 respectively (OECD 121, GLP).

Key value for chemical safety assessment

Koc at 20 °C:
20.9

Additional information

Data waiving (study not technically feasible): The study is technically not feasible since the substance is hydrolytically unstable (half-life < 1h).

Supporting study: The adsorption coefficient (log Koc) of MPKO was determined by means of HPLC in accordance with OECD Guideline 121 and EU Method C19 (GLP study). The Koc and log Koc value of the test substance at neutral pH were determined to be < 20.9 and <1.32 respectively.

[LogKoc: 1.32]