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EC number: 266-028-2
CAS number: 65996-93-2
The residue from the distillation of high temperature coal tar. A black solid with an approximate softening point from 30°C to 180°C (86°F to 356°F). Composed primarily of a complex mixture of three or more membered condensed ring aromatic hydrocarbons.
The determination of Pow is not applicable to the substance pitch, coal
tar, high-temp. itself, but only to single PAHs. Due to its
physico-chemical and ecotoxic properties, benzo[a]pyrene is selected as
marker substance for representing distribution properties of the UVCB
substance pitch, coal tar, high-temp.
An octanol-water partition coefficient
cannot be determined for the almost water-insoluble complex UVCB
substance pitch, coal tar, high-temp. The given log Kow value, relates
to benzo[a]pyrene (BaP) as marker substance. It is taken from de Maagd
et al. 1998 and is an average of two measurements (log Kow 5.98 and
6.24) at different BaP concentrations. The lower value is identical to
the log Kow value for BaP reported by Miller er al. 1985. Similar
results supplemented by log Kow values of additional PAH are reported in
references EU (2008) and Mackay et al. (1992).
EU (2008) Coal-Tar
Pitch, high temperature - Risk Assessment. European Union Risk
Assessment Report, The Netherlands (URL:
According to EU 2008, data are presented
D, Shiu WY, Ma KC (1992). lllustrated
Handbook of Physical-Chemical Properties and Environmental Fate of
Organic Chemicals. Lewis
Publishers, Boca Raton, FL.
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.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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