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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.