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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 substance distillates
(coal tar), heavy oils (anthracene oil >50 ppm BaP, AOH [CAS no.
90640-86-1]) is a UVCB and consists of a complex combination of
polycyclic aromatic hydrocarbons. It comprises mainly3-
and 4-ring aromatic compounds and to a much lesser extent PAHs with 5
rings (see Chapter 1.). Main components are phenanthrene, anthracene,
fluoranthene and chrysene. Benzo[a]pyrene is present at a typical
concentration of below 1%.
Due to the complex
composition of UVCB, it is technically not practical in many cases to
measure their environmental fate properties applying standard tests. To
compensate for this characteristic, available data of related substances
are used as substitute/supporting substances.
As AOH is composed of PAH,
data for this class of compounds will be used to describe the
environmental fate properties of AOH in case information requirements
are not fulfilled by AOH specific data. Data originating from PAH are
assessed to characterise properties of AOH satisfactorily.
Emphasis will be laid on the
main components of AOH (see above). In order to derive data
characteristic of the total of AOH, available data will be assessed and
used in such a way that they represent AOH as whole. In case a distinct
value is required, individual data may be averaged or the most
representative result will be selected. Justification is given under the
fate and pathway characteristics of AOH
Components of AOH (PAH) are
not hydrolysable, since they contain no hydrolysable groups.
They are not readily
biodegradable, but few of them are considered to be inherently
biodegradable, e. g. phenanthrene. As the higher PAH fluoranthene and
pyrene are present in AOH as well, the intrinsic characteristic of PAH
is assessed as not being biodegradable.
Components of AOH (PAH) have
a moderate bioaccumulation potential, reliable BCF values in fish
ranging below 2000, only for anthracene and phenanthrene extending
apparently beyond 2000. On the other hand, experimental evidence and
experience have demonstrated that PAHs show no biomagnification in the
food chain (Lampi and Parkerton 2009) (WHO 2003).
Adsorption to soil is
supposed to vary according to soil composition and adsorption
coefficients of individual substances. Estimates for Koc range from
about 23,000 (phenanthrene) to approximately 90,000 (pyrene) giving the
range for main components of AOH. An individual average characteristic
Koc value for AOH is estimated to be ca. 60,000.
Lampi M and Parkerton T
(2009):Bioaccumulation Assessment of PAHs, Review Paper Prepared for
CONCAWE by ExxonMobil Biomedical Sciences, Inc., October 2009).
WHO (2003). HEALTH RISKS OF
PERSISTENT ORGANIC POLLUTANTS FROM LONG-RANGE TRANSBOUNDARY AIR
POLLUTION, JOINT WHO/CONVENTION TASK FORCE ON THE HEALTH ASPECTS OF AIR
POLLUTION. WHO Regional Office for Europe, World Health Organization 2003
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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