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Environmental fate & pathways

Henry's Law constant

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Description of key information

The Henry's Law Constant has been calculated to be 4.76 Pa.m3/mol. Therefore, Methyl Salicylate is considered as moderately volatile from water at 25°C

Key value for chemical safety assessment

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

Additional information

The Henry's Law constant of methyl salicylate has been calculated according to the equation R16-10 of the guidance on information requirements and chemical safety assessment - chapter R16: environmental exposure assessment (ECHA 2010).

The equation used is the following :


With ( as vapour pressure and water solubility values have not been measured at the same temperature, these values have been extrapolated to the data at 25°C using EUSES calculation):

VP = 18.3 Pa at 25°C (data extrapolated from the measured value at 13 Pa at 20°C).

MOLW = 152.13 g/mol

SOL = 585 mg/L at 25°C (data extrapolated from the measured value of 625 mg/L at 30°C)