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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

Environmental fate & pathways

Adsorption / desorption

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Description of key information

No Koc value is derivable for petro pitch due to practical insolubility in water and complexity of its composition. Benzo[a]pyrene serves as marker substance. Koc and log Koc are estimated based on the log Kow of BaP (see above).

Key value for chemical safety assessment

Koc at 20 °C:
832 000

Additional information

The following values relate to the marker substance benzo[a]pyrene (BaP): The Koc has been estimated from the mean log Pow of 6.13 for BaP according to EU 2008 (Risk assessment of coal-tar pitch): Koc value is estimated using the experimental equation derived by Karickhoff et al. (1979): Koc = 0.63 Kow (or log Koc = 1.00 log Kow – 0.21).

[LogKoc: 5.92]