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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.
AOH is irritating to skin but not irritating to the eye, based on experimental results of the closely structure-related tar oil creosote.There is no evidence of respiratory irritation at ambient temperatures based on occupational experience (low vapour pressure of the substance). At elevated temperatures, exposure to vapours may produce irritating effects on the respiratory tract.
Table for skin irritation study
Score (average of three animals investigated)
Average Draize scores(0 to maximum 4)
24h, 48h, 72h
Time for reversibility in all animals (score 0)
* c : completely reversible n c : not completely reversible n : not reversible
No data on skin and eye irritation is
available for the substance distillates
(coal tar), heavy oils (anthracene oil high (> 50 ppm) BaP, AOH) itself.
Data obtained originate from the closely related tar oil creosote. Due
to the similar production process (fractionated distillation of coal tar
using overlapping conditions), composition of both substances correspond
to each other. Major components are mid-range PAH for both substances
(3- and 4-ring PAH) with some additional 2-ring PAH in creosote but not
2-ring PAH have been tested demonstrating
possible irritation to skin but not to the eye of rabbits. These effects
are similar to that found for creosote. Using test results obtained with
creosote may eventually overestimate the irritating potential of AOH as
2-ring PAH with known skin irritating potential are not present in AOH.
The use of creosote as supporting substance in establishing the
irritation potential of AOH can be considered as worst case. Thus, it is
justified to use creosote as supporting substance in characterising the
irritating potency of AOH.
Creosote was found to be skin irritating
(Cat. 2 according to EU criteria) while at the same time not being
irritating to the eye. Based on results of the supporting substance
creosote, AOH is categorised as skin irritating according to EU criteria
but simultaneously not being irritating to the eye.
For respiratory irritation, no experimental
data has been located. Occupational experience gave no evidence of
respiratory irritation. Reason may be the low vapour pressure of AOH at
ambient temperature (0.6 Pa, see Chapter 1.3). However, exposure to
vapours at elevated temperatures may produce irritating effects on the
Based on experimental evidence (study
according to OECD TG 404 with supporting substance creosote), AOH is to
be classified as skin irritating Cat. 2 based on criteria of Regulation
(EC) No 1272/2008. Test results for eye irritation do not demonstrate a
relevant eye irritating potential. Classification for eye irritation is
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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