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Environmental fate & pathways

Henry's Law constant

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Henry's law constant
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
supporting study
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment
Principles of method if other than guideline:
GLP compliance:
not specified
0.002 other: atm cm3/mole
Atm. press.:
1 013 hPa
Henry's law constant for DVB has been calculated to be 2.253E-3 atm cm3/mole. The compnents of DVB-55, -65, and -HP are concluded to be highly volatile from water.
Executive summary:

Henry's law constant for DVB has been calculated to be 2.253E-3 atm cm3/mole.

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):
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 vapour 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.