Registration Dossier
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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.
Endpoint summary
Administrative data
Description of key information
No particular irritation to skin and eye was noted in experimental standard studies.
In the presence of UV-light (UVA), photo-induced human skin irritation was observed under working (bright sunlight) and experimental (artificial UV irradiation) conditions.
Key value for chemical safety assessment
Skin irritation / corrosion
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed (not irritating)
Eye irritation
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed (not irritating)
Respiratory irritation
Endpoint conclusion
- Endpoint conclusion:
- no study available
Additional information
No particular irritation to skin and eye was noted in experimental standard studies.
However, in the presence of UV-light (UVA), photo-induced human skin irritation was observed under working and experimental conditions (Crow et al. 1961).Human exposure to pitch (identity not specified) within a working environment under bright sunlight resulted in skin irritation. In addition, the same pitch experimentally applied on the skin of human volunteers as chloroform solution caused pronounced skin irritation after radiation with UV-light (UVA).The composition of the pitch utilised may be somewhat different from the registration substance due to differences in production conditions and distillation temperature. Basic constituents and consequentially basic effects will be the same for both substances. Thus, it is justified to use this study (Crow et al 1961) to indicate possible irritation effects of coal tar pitch, high temp. under UV-light irradiation.
Justification for classification or non-classification
No irritating effects have been observed after exposure to pitch, coal tar, high temp. under standard test conditions. Classification for irritation/corrosion is not required.
Potential UV-light induced skin irritating effects (see above) are not taken into account for classification as conditions causing this effect do not correlate to standard test procedures.
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