Registration Dossier

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

The study does not need to be conducted because the substance has a low octanol water partition coefficient and the adsorption potential of this substance is related to this parameter.

For PNEC derivation and environmental risk estimation a Koc value of 148 was used which was derived from the lowest log Kow value of 2.21 with EUSES version 2.12.

Additional information

In accordance with column 2 of Regulation (EC) No 1907/2006, Annex VIII, 9.3.1, the study does not need to be conducted because the substance has a low octanol water partition coefficient and the adsorption potential of this substance is related to this parameter. Available data for all main components of Tar acids, xylenol fraction (CAS 84989-06-0) demonstrate the log Kow to be below 3, i.e. xylenol-isomers: 2.09 to 2.42 (DEZA, 2010; EPA, 2010; Sangster, 1989); cresol-isomers: 1.94 to 1.98 (OECD SIDS, 2003; Sangster, 1989); ethyl-phenols: 2.09 to 2.58 (DEZA, 2010; Umeyama et al., 1971; Sangster, 1989), or trimethyl-phenols: 2.67 to 2.73 (Sangster, 1989). Thus, Tar acids, xylenol fraction (CAS 84989-06-0) exhibits low potential for adsorption.