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Environmental fate & pathways

Adsorption / desorption

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Description of key information

The calculated estimation of the adsorption coefficient (Log Koc) was 12.4761 (KOCWIN-MCI method) and 8.4539 (LKOW method).

Key value for chemical safety assessment

Koc at 20 °C:
2 992 953 710 332

Additional information

The adsorption coefficient of the test material was investigated in a study which was performed under GLP conditions and in accordance with the standardised guideline OECD 121 (Calculation). The study was assigned a reliability score of 2 in accordance with the criteria for assessing data quality set forth by Klimisch et al. (1997).

Consideration of the chemical structure and physical properties of the test material would lead to difficulties in determining a reliable adsorption coefficient therefore a feasibility study was conducted to assess whether or not the HPLC simulation method could be used. Due to the characteristics of the test substance a value for the adsorption coefficient could not be determined by experimental means. It was therefore decided that estimated values would be calculated using appropriate software (Estimation Program Interface EPI ver. 4.1.)

The calculated estimation of the adsorption coefficient (Log Koc) was 12.4761 (KOCWIN-MCI method) and 8.4539 (LKOW method).

[LogKoc: 12.4761]