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Environmental fate & pathways

Henry's Law constant

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Description of key information

Calculation with HENRYWIN v3.20 (EPIWIN software by US-EPA), Henry's Law Constant: 0.119 Pa*m³/mol (Bond Method), 0.0242 Pa*m³/mol (Group Method) 

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
0.119
at the temperature of:
25 °C

Additional information

The prediction for the distribution between aqueous solution and air for the substance 4-phenylbutenone was determined by the computer program HENRYWIN v3.20 (EPIWIN software) by US-EPA (Chemservice S.A., 2011). The program calculates the Henry's Law Constant based on the Bond Method as 0.119 Pa*m³/mol (1.19 E-001 Pa*m³/mol) at a temperature of 25 °C. The Group Method estimation resulted in a Henry´s Law Constant of 0.0242 Pa*m³/mol (2.42 E-002 Pa*m³/mol).