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Description of key information

The Henry coefficient (H) of Cashmeran was estimated to be 4.202 Pa-m3/mole at 25oC using measured vapour pressure and water solubility.

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
4.202
at the temperature of:
25 °C

Additional information

Henry coefficient can be calculated using: Vapour Pressure (Pa) x Molecular weight (kg/Mol) / WS (kg/l). Using this equation the following values were determined:

Henry coefficient at 25°C: 4.202 Pa-m3/mole; This is converted to the dimensionless coefficient (25 deg C): 4.202 / (8.314 * 298) = 0.0017 and the Henry coefficient under environmental conditions at 12°C is 1.88Pa-m3/mole (converted with EUSES)

This Henry coefficient shows that volatilisation is of minor importance in the environmental behaviour of Cashmeran (see also distribution modelling).