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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Henry's Law constant is a predicted value, of 3.62 x 10-6atm m3/mol (= 0.366 Pa-m3/mol), based on the QSAR model HENRYWIN v3.20 contained within U.S. EPA's EPI-Suite v4.10.

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
0.366
at the temperature of:
25 °C

Additional information

The Henry's Law constant for 4 -vinylpyridine is a predicted value, of 3.62 x 10-6atm m3/mol (= 0.366 Pa-m3/mol), based on the QSAR model HENRYWIN v3.20 contained within U.S. EPA's EPI-Suite v4.10. As this value falls between 10-5and 10-7, according to the 2007 Interpretive Guidance Document for Sustainable Futures Summary Assessment, it indicates that the substance is slightly volatile from water.