Registration Dossier
Registration Dossier
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EC number: 207-975-3 | CAS number: 503-74-2
Henry's Law constant
Administrative data
Link to relevant study record(s)
Description of key information
A HLC of 8.333E-7 atm m³/mol (0.0844 Pa m³/mole) was determined using equilibrium partial pressure measurements over aqueous solutions.
Key value for chemical safety assessment
- Henry's law constant (H) (in Pa m³/mol):
- 0.084
- at the temperature of:
- 25 °C
Additional information
For isovaleric acid, a Henry's law constant of 8.333E-7 atm m³/mole was determined in a study using equilibrium partial pressure measurements over aqueous solutions at 298.15 K (25°C) (Khan, 1992).
A calculated Henry's law constant of 1.28E-006 atm m³/mole (bond contribution method) and of 9.96E-007 atm m³/mole (group contribution method) was obtained using the program HENRYWIN v 3.2 (Part of US EPA EPI Suite v4.10) (GUBDH, 2012). Measured and calculated HLC match satisfactorily.
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