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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The adsorption coefficient (log Koc) of zinc, 5,5'-azobis-2,4,6(1H,3H,5H)-pyrimidinetrione complexes and melamine determined by HPLC was 0.821 at 30°C, indicating a low potential for adsorption.

Key value for chemical safety assessment

Koc at 20 °C:

Additional information

The study of Liu, 2014, was performed at 30°C instead of the default 20°C which, however, has no impact, in particular as no risk assessment was needed.

[LogKoc: 0.821]