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Environmental fate & pathways

Adsorption / desorption

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Description of key information

Waived:  Measured of adsorption/desorption is not required where low potential for adsorption is indicated from low value of log Kow.  A predicted value of log Koc = 1.61 is used for the chemical safety assessment.

Key value for chemical safety assessment

Koc at 20 °C:
41.3

Additional information

In accordance with column 2 of REACH annex VIII, adsorption/desorption screening does not need to be conducted if, based on the low octanol water partition coefficient, the substance can be expected to have a low potential for adsorption. The 2-ethylhexanoate component of the tin bis(2 -ethylhexanoate) salt has log Kow = 2.64 for its un-ionized species occurring at pH < 2.8. The log D for species occurring at pH 7 is estimated to be approximately 0.6. The estimated organic carbon-normalized adsorption coefficient (log Koc) is 1.61 (Koc = 41.3).