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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 calculated adsorption/desorption coefficient Koc of L-alanine is ca. 0.0361. 
The estimated result shows that the substance has no environmental impact.
In accordance with REACH Annex VIII section 9.3.1. column 2 and Annex IX section 9.3.3. column 2, further studies do not need to be conducted as the substance has a low log Kow as well as the substance and its degradation products decompose rapidly.

Key value for chemical safety assessment

Koc at 20 °C:
0.036

Additional information

The calculated adsorption/desorption coefficient Koc of l-alanine is ca. 0.0361 (log Koc: ca. -1.4425). This estimated result shows that the substance has no environmental impact.

The log Koc was calculated by EpiSuite's KOCWIN model. The suitability of the model was assessed and it was concluded that L-alanine is considered to be inside the applicability domain of the EpiSuite KOCWIN model.

In accordance with REACH Annex VIII section 9.3.1. column 2 and Annex IX section 9.3.3. column 2, further studies do not need to be conducted as the substance has a low log Kow as well as the substance and its degradation products decompose rapidly.