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Environmental fate & pathways

Adsorption / desorption

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Description of key information

The determination of adsorption/desorption of charcoal was performed according to OECD Guidelines for testing chemicals, testing gyidance No. 121. 
The log Koc of the test item charcoal is stated as <1.5.

Key value for chemical safety assessment

Koc at 20 °C:
31.6

Additional information

Two studies were performed to estimate the adsorption/desorption of charcoal according to OECD Guidelines for testing chemicals, testing gyidance No. 121.

The first one on a sample of charcoal with C-Fix = 80.5 % shows that the The log Koc of the test item charcoal is stated as <1.5.

The second on a sample of charcoal with C-Fix = 78.55 % shows that due to the limited solubility of the test item no chromatographic peak was detectable in the test item injection.

As a result the log Koc of the test item charcoal is stated as <1.5.

[LogKoc: 1.5]