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EC number: 292-607-4
CAS number: 90640-86-1
Distillate from the fractional distillation of coal tar of bituminous coal, with boiling range of 240°C to 400°C (464°F to 752°F). Composed primarily of tri- and polynuclear hydrocarbons and heterocyclic compounds.
The Henry´s Law constant H is estimated as approx. 30 Pa*m³/mol at ambient temperature, related to the vapour pressure and water solubility of AOH.
The value derived for Henry's Law constant H relates to the
properties of the substance distillates (coal tar), heavy oils
(anthracene oil >50 ppm BaP, AOH) except that the molecular weight of
the marker substance phenanthrene (178.2 g/mol) is used in the
estimation of H.
The constant H for AOH is calculated using the water solubility
(WSF) of 3.5 mg C/L (= 0.02 mol/m³) and the vapour pressure of 0.61 Pa,
both at 20°C (see Chapter 1.3.). Dimension of H is Pa*m³/mol.
H = VP/WS
H = 30 Pa*m³/mol
Note: The Henry's Law constant of phenanthrene is about 3.7
Pa*m³/mol (at 25 °C) (EU 2008).
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