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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Dissociation constant

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Administrative data

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Description of key information

The dissociation constant, pKa, of lithium salts of monocarboxylic acids C14-C22 category have been read across from sodium palmitate, with a pKa of 8.6 - 8.8 at 25°C, and potassium stearate, with a pKa of 10.15 at 20°C.

Key value for chemical safety assessment

Additional information

The dissociation constants have been taken from published articles, read across from sodium palmitate (Kanicky et al 2000) and potassium stearate (Kanicky and Shah 2002).