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Environmental fate & pathways

Henry's Law constant

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Description of key information

The components of DVB-55, -65, and -HP have estimated Henry's Law Constants of approximately 0.002 atm*m3/mole (~200 Pa*m3/mole) and are thus expected to have high potential for volatilization from water. 

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
200
at the temperature of:
20 °C

Additional information

Estimated Henry's Law Constant was generated using the group contribution method of U.S. EPA HENRYWIN software. The prediction indicates a Henry's Law Constant of 0.0022 atm*m3/mole at 25 °C. The ratio of measured vapor pressure to water solubility at 20 °C gives an estimated Henry's Law Constant of 0.0018 atm*m3/mole (182 Pa*m3/mole). Therefore, the substances may be regarded as being highly volatile from water.