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Environmental fate & pathways

Henry's Law constant

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Reference
Endpoint:
Henry's law constant
Type of information:
(Q)SAR
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with limited documentation / justification
Reference:
Composition 0
Principles of method if other than guideline:
QSAR: ratio of solubility and vapour pressure
Test material information:
Composition 1
H:
0 atm m³/mol

1.13e-7 atm m3 mol-1

Conclusions:
Lactic acid is unlikely to volatilize from water according to the Henry's Law Constant of 1.13*10^-7 atm m^3 mol^-1.
Executive summary:

The Henry's law constant of lactic acid was estimated with EPISuite, as the quotient of its vapour pressure and its aqueous solubility. Since lactic acid is miscible with water, this is in fact an overestimation of its propensity to evaporate from water.

Description of key information

Lactic acid is unlikely to volatilize from water according to the Henry's Law Constant of 1.13*10-7 atm m3 mol-1.

Key value for chemical safety assessment

Additional information