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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 0.00309 Pa-m3/mole

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
0.003
at the temperature of:
25 °C

Additional information

The Henry's Law Constant (HLC) of THPI D4, calculated using the software HENRYWIN v3.20, leads to the estimated value of 0.00309 Pa-m3/mole. 

The above value indicates that the substance is essentially not volatile from surface water.