Registration Dossier
Registration Dossier
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EC number: 292-605-3 | CAS number: 90640-84-9 A complex combination of hydrocarbons produced by the distillation of coal tar and boiling in the range of approximately 240°C to 280°C (464°F to 536°F). Composed primarily of acenaphthene, naphthalene and alkyl naphthalene.
Henry's Law constant
Administrative data
Link to relevant study record(s)
Description of key information
The Henry´s law constant H is estimated as 240 Pa*m³/mol at ambient temperature, related to the vapour pressure and water solubility of wash oil.
Key value for chemical safety assessment
- Henry's law constant (H) (in Pa m³/mol):
- 240
- at the temperature of:
- 20 °C
Additional information
The value H relates to the properties of the wash oil (Vp and water solubility), but using the molecular weight of the marker substance, acenaphthene: i.e. calculated from the MW of 154.2 g/mol, the water solubility (WSF) of 25 mg C/L [= 0.16 mol/m3] (20°C) and the vapour pressure of 38.5 Pa:
H = VP x MW / WSF [Pa*m3/mol]
Note: The Henry's law constant of acenaphthene is about 3.7 Pa*m3/mol (at 25 °C) (EU 2008).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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