Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Bioaccumulation: aquatic/sediment

Hydrocarbons, C10 -C13, n-alkanes, <2% aromatics are hydrocarbon UVCBs. Standard tests for this endpoint are intended for single substances and are not appropriate for this complex substance. However, this endpoint is fulfilled using quantitative structure property relationships for representative hydrocarbon structures. The BCFBAF 3.01 model is a well characterised and generally accepted bioaccumulation prediction model, used by the USEPA, the OECD and recommended by ECHA. The SMILES input data for the BCFBAF 3.01 model is obtained from the PETRORISK Product Library (see OECD QSAR Toolbox report in 'Attached full study report' and PETRORISK report attached in IUCLID section 13).

The calculated BCF of Hydrocarbons, C10 -C13, n-alkanes, <2% aromatics ranges from 44.60 - 5361.88 L/kg.

The BCFWIN v2.16 model within EPISuite 3.12 has been used to estimate the bioaccumulation potential of a number of representative substances. This data is used as a weight of evidence alongside the data reported above.

The calculated BCF of decane is 144.3 L/kg. This value indicates that decane is not to be considered as a bioaccumulable substance.

The calculated BCF of undecane is 337.8 L/kg. This value indicates that undecane is not to be considered as a bioaccumulable substance.

The calculated BCF of 790.9 L/kg indicates that dodecane does not belong to bioaccumulable substances.

The calculated BCF of tetradecane is 962.9 L/kg. This value indicates that tetradecane is not to be considered as a bioaccumulable substance.

Bioaccumulation: terrestrial

This endpoint has been calculated for representative hydrocarbon structures including the substances in C9-14 Aliphatics (≤ 2% aromatic) using the BCFWIN v2.16 model within EPISuite 3.12 as input to the hydrocarbon block method incorporated into the PETRORISK model. The predicted BCFs for hydrocarbons are generally overly conservative since biotransformation is not quantitatively taken into account. Therefore, indirect exposure and resulting risk estimates predicted by PETRORISK are likely to be overestimated. For the purposes of PBT assessment, measured bioaccumulation data for representative hydrocarbon constituents including the substance have been used as detailed in PETRORISK spreadsheet attached to IUCLID section 13.

Additional information