Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Link to relevant study record(s)

Description of key information

The volatility of dissolved constituents from water phase is very low.

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
at the temperature of:
20 °C

Additional information

The value H (H = Pa*m³/mol) relates to the MW of the marker substance, benzo[a]pyrene (BaP) ( MW = 252.3 g/mol), to the water solubility of BaP (1.54 µg/L = 6.1 *10-6 mol/m3) (20°C), and the estimated vapour pressure of the coal-tar pitch of 6 *10-6 Pa(20 °C).