Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 701-305-8 | CAS number: -
PBT assessment
Administrative data
PBT assessment: overall result
- PBT status:
- PBT assessment does not apply
- Justification:
- Persistence
As indicated in the REACH Guidance of PBT assessment, Section C.1.3, page 5 [information_requirements_part_c_en.pdf, dec. 2011], persistency testing is practically not possible due to the refractory inherent properties and complexity of this UVCB substance.
Wording in the REACH Guidance:
"....However, for substances for which persistency testing is difficult or practically impossible, like e.g. for certain multi-constituent or very poorly water soluble substances, it may sometimes be more reasonable to start the PBT/vPvB assessment by evaluating the B criterion (see Section R.11.1.3.2 for further guidance)."
- Bioaccumulation
Pitch, coal tar, high-temp., < 1% 4- to 5-membered condensed ring aromatic hydrocarbons [EC no. 701-305-8] (CTPhtht) is a practically water-insoluble UVCB substance and cannot pass biological membranes due to its complex high-molecular matrix structure. Hence, a carbo pitch-specific BCF-value cannot be determined. Besides its poor bioavailability, the determination of the partition coefficient proved to be technically not feasible due to its very limited solubility (see phys.-chem. data, Chapter 1.3.). Hence, the bioaccumulation criteria for PBT are not applicable to CTPhtht itself.
Wording in the REACH Guidance, Section C.1.4.2, page 6:
"...However, for a substance produced or imported at a level of 100 t/y or more, information on bioconcentration in aquatic species has to be made available by the registrant and to be considered in the assessment, unless this information can be waived according to column 2 of Annex IX or according to Annex XI(3) (e.g. low bioaccumulation potential, no exposure, testing technically not possible)."
- Toxicity Assessment
Based on structure-analogy, Pitch, coal tar, high-temp., < 1% 4- to 5-membered condensed ring aromatic hydrocarbons [EC no. 701-305-8] (CTPhtht), is not expected to show chronic aquatic toxicity under standard experimental conditions. However, it has been self-classified as CMR substance, based on BaP content. The current re-evaluation concludes: Carc. 1B, Muta. 1B, and Repr. 1B. Therefore, the T criterion is fulfilled.
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.
