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Environmental fate & pathways

Adsorption / desorption

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Description of key information

Based on an octanol-water partition coefficient of log Pow = 0.31, no significant adsorption to organic matter is expected.

Key value for chemical safety assessment

Additional information

According to Annexes VIII and IX, column 2, points 9.3.1 and 9.3.3 of the REACH Regulation, the adsorption coefficient (Koc) does not need to be experimentally determined if, based on the physicochemical properties, the substance can be expected to have a low potential for adsorption (e.g. the substance has a low octanol water partition coefficient), or the substance and its relevant degradation products decompose rapidly. With an octanol-water partition coefficient (log Kow) of 0.31, and no significant adsorption of ethyl-(S)-lactate to organic matter is expected. Furthermore, ethyl-(S)-lactate is readily biodegradable. Hence both criteria for adaptation of information requirements are fulfilled. The conduct of an adsorption/desorption study is not considered to be required.