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Environmental fate & pathways

Henry's Law constant

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Description of key information

Henry's Law constants:

- hexahydrophthalic acid (HHPAc): 2.71E-4 Pa-m3/mole

- cyclohexane-1,2-dicarboxylic anhydride (HHPA): 6.52E-4 Pa-m3/mole

Key value for chemical safety assessment

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

Additional information

The Henry's Law constants of hexahydrophthalic acid (HHPAc), as hydrolysis product of cyclohexane-1,2-dicarboxylic anhydride (HHPA), was considered for the environmental assessment.

The value of 2.71E-4 Pa m³/mol shows that HHPAc is essentially non volatile from surface water.