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Environmental fate & pathways

Adsorption / desorption

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Description of key information

Adsorption to the solid soil phase is not expected. 

Key value for chemical safety assessment

Koc at 20 °C:

Additional information

A calculated log Koc of 2.88 is available (BASF SE, SRC PCKOC v2.0, 2012). This value refers to the uncharged molecule. The test substance is a salt and will therefore exist as an ion in the environment. Hence, the PCKOC-model may estimate adsorption to organic carbon defectively since it does not consider the ionic properties of the molecule. In a calculation conducted according to a publication by Franco & Trapp, 2008 using the parameters pKa = 2.78 and log Pow = -1.81 (values for the uncharged molecule, online query on 19-04-2013) a log Koc range from 1.03 to 1.34 at pH 5 to pH 9 was determined for the ionized molecule. Based on these data the test substance is not expected to bind to the solid soil phase.

[LogKoc: 1.34]