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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Environmental fate & pathways

Henry's Law constant

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Description of key information

The calculated Henry's Law constant for the Sulfuric acid, mono C12-alkyl ester, sodium salts, was 0.0187 Pa m3/mol at 25°C. Therefore, the substance is not expected to evaporate from the water surface to the atmosphere.

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
0.019
at the temperature of:
25 °C

Additional information

The Henry's Law constant for the Sulfuric acid, mono C12-alkyl ester, sodium salts, was calculated as 0.0187 Pa m3/mol at 25°C using the Bond estimation method of HENRYWIN v3.20 (AS consortium, 2010). The calculation refers to the uncharged molecule. However, based on a pKa value of 1.31 the molecule is an anion under environmental conditions. Therefore, the calculation overestimates the volatility of the test substance from water surfaces.