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Dissociation constant

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Description of key information

Parent compound: 2-ethylhexanoyl chloride: not applicable
Hydrolysis product: 2-ethylhexanoic acid: pKa = 4.72 (SPARC v4.2; BASF, 2009)

Key value for chemical safety assessment

Additional information

Parent compound: In accordance with column 2 of REACH Annex IX, the dissociation constant study does not need to be performed as the substance is hydrolytically unstable (half-life less than 12 hours).

Hydrolysis product: The pKa of 2 -ethylhexanoic acid is 4.72, indicating that this compound will exist almost entirely in anion form in the environment (SPARC v4.2; BASF, 2009).