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Environmental fate & pathways

Henry's Law constant

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Description of key information

The Henry´s Law Constant was calculated by using HENRYWIN v3.10. 
From the values obtained with three different methods, the result from the Bond method was used for any exposure assessment: 1.5 E -03 Pa m³/mol corresponding to 1.48 E -08 atm m3/mol. The potential of trimethylolpropane to pass from the water phase into air is very low.

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
0.002
at the temperature of:
25 °C

Additional information

Key study:

The Henry´s Law Constant was calculated by using HENRYWIN v3.10.

The following values were obtained:

- Calculated with the Bond method: 1.48 E -08 atm m3/mol corresponding to 1.5 E-03 Pa m³/mol

- Calculated with the Group method: 3.08 E -15 atm m3/mol

- Calculated from vapour pressure and water solubility (using values calculated with EPI): 7.451 E-12 atm m3/mol

The potential of trimethylolpropane to pass from the water phase into air is very low.

Reference: Lanxess, 2009

Supporting study:

Henry`s Law Constant was calculated for trimethylolpropane by using HENRYWIN v3.10 (Bond method): to be 1.5 E-03 Pa m³/mol at 25°C corresponding to 1.48 E-08 atm m3/mol.

Reference: Bayer, 2006