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Environmental fate & pathways

Adsorption / desorption

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Description of key information

Butylal adsorption/desorption was estimated by KOCWIN v2.00 software to a Koc value of 184.1 L/kg.

Therefore butylal would be moderately mobile in soil.

Key value for chemical safety assessment

Koc at 20 °C:
184.1

Additional information

According to REACH Annex VIII, Point 9.3.3 (Adsorption/desorption screening), the study needs not 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 degradation products decompose rapidly.

With a log Kow of 2.75, a study using animals is not justified. Butylal adsorption/desorption was estimated by KOCWIN v2.00 software to a Koc value of 184.1 L/kg. Therefore butylal would be moderately mobile in soil.

[LogKoc: 2.27]