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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Water solubility

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Administrative data

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Description of key information

At a loading of 1000 mg petro pitch/L, the mean TOC of the water-soluble fraction (WAF) was 0.4 mg/L. at 20 °C. 
A total of 0.8 to 1.4 µg/L was found in the WAF of a loading of 100 mg pitch/L at 21 °C, related to the 16 EPA PAHs (here: analogy to coal-tar pitch).

Key value for chemical safety assessment

Water solubility:
0.002 mg/L
at the temperature of:
20 °C

Additional information

The stated water solubility relates to the marker substance, benzo(a)pyrene (EU 2008, Tab. 1.6).


EU (2008) Coal-Tar Pitch, high temperature - Risk Assessment. European Union Risk Assessment Report, The Netherlands [ ]

According to EU 2008, presented data from:

Mackay D, Shiu WY, Ma KC (1992). lllustrated Handbook of Physical-Chemical Properties and Environmental Fate of Organic Chemicals.Lewis Publishers, Boca Raton, FL.