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Environmental fate & pathways

Adsorption / desorption

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Description of key information

The adsorption coefficient of the test item has been determined to be less than 17.8, log10Koc <1.25.

Key value for chemical safety assessment

Koc at 20 °C:
17.8

Additional information

The determination was carried outusing the HPLC screening method, designed to be compatible with Method C19 Adsorption Coefficient of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 121 of the OECD Guidelines for Testing of Chemicals, 22 January 2001.

The method guideline states that the measurement of adsorption coefficient should be carried out on substances in their ionised and unionised forms. However, the dissociation constants of certain functional groups found in the test item made it impossible to satisfy this criterion. Therefore, testing was carried out at approximately neutral pH only with the test item in its unionised state.

The adsorption coefficient of the test item has been determined to be less than 17.8, log10Koc <1.25.

[LogKoc: 1.25]