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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Adsorption / desorption

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Administrative data

Link to relevant study record(s)

Description of key information

Koc = 18.5 (log Koc = 1.27; ECT, 2009)

Key value for chemical safety assessment

Additional information

In accordance with column 2 of REACH Annex VIII, an adsorption/desorption study does not need to be conducted since n-butyl acetate has a low potential for adsorption due to a low octanol-water partition coefficient (log Kow = 2.3; OXEA, 2009).

The adsorption coefficient (log Koc) was estimated to be less than 3 (MCI method: 1.3; Kow method: 1.8) using the KOCWIN (v2.00) program. The estimated Koc indicates that adsorption to soil is not to be expected.

The earlier version of this software (PCKOCWIN) is listed in the REACH Guidance document. 82% of the predicted log Koc values were within 0.5 Log units. The mean absolute error is 0.490 Log units. This error is acceptable.