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Description of key information

The Henry´s law constant H is estimated as 39 Pa*m³/mol at ambient temperature, related to the vapour pressure and water solubility of the anthracene oil <50 ppm BaP.

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
39
at the temperature of:
20 °C

Additional information

The value H relates to the properties of the anthracene oil < 50 ppm BaP (AOL) (Vp and water solubility), but using the molecular weight of the marker substance phenanthrene: i.e. calculated from the MW of 178.2 g/mol, the AOL water solubility (WSF) of 5 mg C/L [= 0.028 mol/m3] (20°C) and the vapour pressure of 1.1 Pa: H = Pa*m3/mol.

Note: The Henry's law constant of phenanthrene is about 3.7 Pa*m3/mol (at 25 °C) (EU 2008).