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Environmental fate & pathways

Henry's Law constant

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Description of key information

The calculated Henry’s law constant of 0.941 Pa m3/mol (vapour pressure x molecular weight / water solubility) at 20-23 °C indicates low volatility from aqueous solution.

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
0.941
at the temperature of:
20 °C

Additional information

Due to hydrolysis the Henry’s law constant cannot be measured. Environmental distribution considerations for isophorone diisocyanate are of little relevance because the reaction with water is expected to eliminate the substance from the environment rapidly.