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Environmental fate & pathways

Henry's Law constant

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Description of key information

Key value for chemical safety assessment

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There are no experimental data on the volatilisation of Tinuvin 123 available. Therefore, the potential to evaporate into the atmosphere from the water surface was estimated using EpiSuites HENRYWIN (v3.20) software.

For compound 1 of Tinuvin 123, a Henry´s Law Constant (@25°C) of 3.50E-006 Pa-m3/mole was predicted. An estimation for compound 2 resulted in a Henry´s Law Constant (@25°C) of 2.25E-016 Pa-m3/mole.

Based on these calculations, Tinuvin 123 isnot expected to evaporate into the atmosphere from the water surface.