Registration Dossier
Registration Dossier
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EC number: 231-293-5 | CAS number: 7486-38-6
Henry's Law constant
Administrative data
Link to relevant study record(s)
Description of key information
Results from the corresponding acid are taken into account for this endpoint. The Henry's Law Constant of 0.0616 Pa m³/mol for adipic acid is estimated from the ratio of its vapour pressure to its water solubility at a temperature of 25 °C indicating a low rate of volatilisation from surface water.
Key value for chemical safety assessment
- Henry's law constant (H) (in Pa m³/mol):
- 0.062
- at the temperature of:
- 25 °C
Additional information
A
read-across approach with adipic acid is applied. In aqueous media,
disodium adipate and adipic acid acid dissociate into the corresponding
anion (1,6-hexandioic acid ion) and the sodium ion and hydrogen ion
(proton), respectively. Fate, behavior and the ecotoxicological
properties of adipic acid and its disodium salt are thought to be an
effect of the di-carboxylate ion rather than of the sodium ion or the
hydrogen ion (proton), which are normal constituents in environmental
systems and have no relevant ecotoxic properties in low concentrations.
Therefore a read-across between disodium adipate and adipic acid is
justified.
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