Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

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 (log Koc = 1.3; Koc = 18.5) using the KOCWIN v2.00 program. The estimated Koc indicates that adsorption to soil and suspended sediment is not expected.


The Henry's Law constant (HLC) of n-butyl acetate was experimentally determined to be 28.5 Pa*m³/mol at 25 °C. Therefore, slow volatilization is expected.


Taking the calculated Henry's Law constant of 28.5 Pa*m³/mol, volatilization half-lives of 3.3 and 127 hours were estimated by EPIWIN v4.00 for a model river and a model lake, respectively (ECT, 2009).