Registration Dossier
Registration Dossier
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EC number: 954-225-2 | CAS number: -
PBT assessment
Administrative data
PBT assessment: overall result
- PBT status:
- the substance is not PBT / vPvB
- Justification:
In 2019, Concawe updated their report An Evaluation of the Persistence, Bioaccumulation and Toxicity of Petroleum Hydrocarbons (attached) which assessed the PBT properties of Petroleum hydrocarbons according to ECHA REACH Guidance Chapter R.11 PBT/vPvB assessment (ECHA 2017a).
The PBT/vPvB assessment was performed using the hydrocarbon block method. The hydrocarbon block method effectively groups constituents (those that are clearly known and those with enough information to identify which block they fit into) within each hydrocarbon product that have similar structures and carbon numbers. The hydrocarbon blocks were derived in this study using using information from a range of Petroleum Hydrocarbons Measured data and model predictions for identified in the Concawe library for representative constituents of each hydrocarbon blocks was evaluated to develop an evidence-based conclusion regarding PBT/vPvB properties.
Concawe's strategy to assess PBT/vPvB properties of representative structures of petroleum substance included:
1) An evaluation of measured data and model predictions for P and B properties for identified representative constituents of each hydrocarbon block to develop a conclusion regarding P and B;
2) For each hydrocarbon block found to contain structures that potentially met the P and B criteria, an evaluation of measured data and model predictions for T properties was performed.
It was concluded that
- Higher carbon numbers fulfil the P/vP criteria (no carbon numbers <C14 fulfil P/vP),
- Lower carbon numbers sometimes met the B criteria (no carbon number >C19 fulfil B).
- C14-C19 poly-naphthenic hydrocarbons; C19 monoaromatic hydrocarbons; and C17-C18 naphthenic mono-aromatic hydrocarbons potentially met the Pand B crtieria.
- Toxicity (T) assessment on C14-C19 poly-naphthenic hydrocarbons; C19 monoaromatic hydrocarbons; and C17-C18 naphthenic mono-aromatic hydrocarbons and it was concluded that none met the T criteria.
- None of the hydrocarbon blocks met the all three criteria of P, B and T or were identified as vPvB.
- Therefore, none of the hydrocarbon blocks were found to be PBT/vPvB.
It is acknowledged by Concawe that some PAH substances have been identified by ECHA as PBT and/or vPvB and are included on the Candidate List of substances of very high concern (SVHCs) for Authorisation. Concawe do not meet the same conclusions as ECHA in thier report, but have been noted in the discussion, for completeness.
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