Registration Dossier
Registration Dossier
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EC number: 202-705-0 | CAS number: 98-83-9
Henry's Law constant
Administrative data
Link to relevant study record(s)
Description of key information
Alpha-methylstyrene is highly volatile from aqueous solution (Henry's Law constant calculated: 258-439 Pa x m³/mole at 25°C).
Key value for chemical safety assessment
- Henry's law constant (H) (in Pa m³/mol):
- 439
- at the temperature of:
- 25 °C
Additional information
Experimental data are not available. Therefore Henry's Law constant was calculated via a generally accepted calculation model and according to a generally accepted equation and using peer-reviewed input values.
Alpha-methylstyrene is highly volatile from aqueous solution (Henry's Law constant calculated using EPIWIN v3.11, HENRYWIN v3.10: 438.63 Pa x m³/mole and calculation according to the equation H=vp/ws: 282 Pa x m³/mole at 25°C each). The Henry's Law constant calculated according to the equation H=vapor pressure/water solubility and using reliable experimental derived values indicates also that alpha-methylstyrene is highly volatile from aqueous solution (H=258.32 Pa x m³/mole at 25°C).
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