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Environmental fate & pathways

Henry's Law constant

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Description of key information

Henry's Law Constant (H): 5.60E-003 Pa-m3/mole

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
0.006
at the temperature of:
25 °C

Additional information

A value of 5.53E-008 atm-m3/mole (0.0056 Pa-m3/mol) was calculated for n-Vinylpyrrolidone (nVP) using USEPA HENRYWIN v3.20, indicating that nVP will not readily volatilize from moist soil.