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Environmental fate & pathways

Adsorption / desorption

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Reference
Endpoint:
adsorption / desorption: screening
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
the study does not need to be conducted because the substance and its relevant degradation products decompose rapidly

Description of key information

The performance of a test for adsorption/desorption screening is scientifically unjustified. REACH Regulation (EC) No 1907/2006, Annex IX, Sect. 9.3.1, Col. 2, states as follows: "9.3.1. The study does not need to be conducted 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." Hydrolysis data show that the test substance hydrolyses rapidly within minutes forming its degradation products. In addition, the test substance has log Pow of < 3.0 (Log Pow = 2.92, calculated using EPIWIN, KOWWIN v1.68) indicating a low potential for adsorption. Therefore, adsorption/desorption screening testing was considered not scientifically justified.

Key value for chemical safety assessment

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