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Description of key information

The Henry's Law Constant of the substance is calculated from the vapour pressure  and water solubility to be 2.17 * 10^(-7) Pa .m3/mol at 20°C. 

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
at the temperature of:
20 °C

Additional information

Volatilisation of organic compounds from surface waters is generally estimated by the Henry's law constant. The Henry's law constant for (hydroxyethyl)urea was calculated from the ratio of the vapour pressure (Pa) and the water solubility (g/m3). Based on the vapour pressure of 0.0015 Pa at 20°C and the water solubility of 720 g/L at 20°C, the Henry's law constant was calculated with EPIsuite HENRYWIN (v3.20) to be 2.17 * 10^(-7) Pa .m3/mol at 20°C. Considering the low value, volatilisation at environmental conditions is expected to be negligible.