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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Environmental fate & pathways

Henry's Law constant

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Description of key information

Benzene has a Henry's Law Constant of 557 to 562 Pa.m3/mol based on experimental values.

Key value for chemical safety assessment

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

Additional information

Benzene has a Henry's Law Constant of 557 yo 562 Pa.m3/mol based on experimental values reported by Lide 2008 and in EpiSuite, respectively. No information on the methods used is available for the Lide 2008 value but this information is taken from a reliable peer reviewed handbook and is considered reliable and suitable for use for this endpoint. QSAR calculated values also support the experimental database values.