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Environmental fate & pathways

Adsorption / desorption

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Description of key information

Key value for chemical safety assessment

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In water (including soil or sediment pore water) sodium methanolate dissociates quickly into the two degradation products methanol and sodium hydroxide in the aquatic environment.
Sodium hydroxide rapidly dissolves and subsequently dissociates in water present as the sodium ion (Na+) and hydroxyl ion (OH-). If emitted to surface water, sorption to particulate matter and sediment will be negligible.

For methanol, the Koc value was determined via QSAR calculation and resulted in a Koc value of 1 (study 2003, BASF 2004).

Lokke et al. (1984) published experimentally derived Koc values of 0.13 to 0.61 for methanol indicating the low soil sorption potential of methanol.