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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The test substance 5-ethyl-1,3-dioxane-5-methanol has been found to the readily biodegradable with biodegradation rates over 90% being observed in both the key and supporting studies. As such, removal in the environment is expected to be rapid and so further information on abiotic removal, transport and distribution are not required. A hydrolysis study concluded that CTF is hydrolytically stable.

The value of the LogKoc value 2.381 L/kg is an estimated value which was calculated using the EpiSuite QSAR tool.


There is no risk of persistence in the environment and biological removal processes will be rapid with complete mineralization expected in a short time frame due to biodegradation.


5-ethyl-1,3-dioxane-5-methanol has a low log Kow of 0.19 and so no significant adsorption or potential for bioaccumulation is expected.


5-ethyl-1,3-dioxane-5-methanol has a low vapour pressure of 1.4 Pa at 25 degrees Celsius. As such no significant partitioning to air will occur.

Additional information