Registration Dossier
Registration Dossier
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EC number: 935-721-8 | CAS number: -
PBT assessment
Administrative data
PBT assessment: overall result
- PBT status:
- the substance is not PBT / vPvB
- Justification:
Phenol, styrenated epoxidised [EC-No. 935-721-8], the target substance, is derived from a type of styrenated phenolthat is composed mainlyof mono- and distyrenated phenol, overall three key components, namely 2- and 4-(1-phenylethyl)phenol) and 2,4-bis(1-phenylethyl)phenol. The composition and chemical structure of the precursor is largely preserved in the epoxidised reaction product. It is assumed that inherent properties of the precursor are also applicable to the reaction product, phenol styrenated epoxidised (READACROSS).
For phenol, styrenated, PBT properties according to Annex XIII of Regulation (EU) 1907/2006 (REACH) were evaluated examining its two constituents - mono(1-phenylethyl)phenol (two isomers) and 2,4-bis(1-phenylethyl)phenol - individually. Assessment was carried out, based on ECHA document "Guidance on information requirements and chemical safety assessment, Chapter R.11: PBT Assessment".
These components of phenol-styrenated have been demonstrated to be no PBT candidates (see endpoint summaries and Brooke et al. 2009).
In this context, the absence of a significant bioaccumulating potential for the mono- as well as the distyrenated phenols is the prominent feature to be applicable to the epoxidised forms with high certainty. On the other hand, definite conclusions have not yet been drawn on persistence and toxicity due to limited data availability, since moreover this has no decisive impact on the final PBT evaluation.
Like their corresponding mono- and distyrenated phenolic precursors. the epoxidised target components are assessed to not fulfil the B/vB criterion, and thus are not considered to be PBT substances, hence neither is phenol styrenated epoxidised [EC-No. EC-No. 935-721-8].
Reference:
Brooke D, Burns J, Cartwright C, and Pearson A 2009: Evidence - Environmental risk evaluation report: Styrenated phenol. Environmental Agency, Bristol/UK. [http://a0768b4a8a31e106d8b0-50dc802554eb38a24458b98ff72d550b.r19.cf3.rackcdn.com/scho1209brqx-e-e.pdf]
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