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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Link to relevant study record(s)

Description of key information

pKa for sodium sulfate is 1.92
pKas for sodium amino-12-dodecanoate are 4.74 and 10.42
pKas for disodium dodecanediote are 4.45 and 5.05

Key value for chemical safety assessment

Additional information

Disodium dodecanedioate is the conjugate base from dodecanedioic acid (CAS 693-23-2) : pKas for these acid/base conjugates were generated with SPARC (v 4.6). pKa1 = 4.45 and pKa2 = 5.05

Sodium amino-12-dodecanoate is the conjugate base of 12-aminododecanoic acid (CAS 693-57-2): pKas for these acid/base conjugates were generated with SPARC (v 4.6). pKa1=4.74 and pKa2=10.42

Sodium sulfate (=sulfate ion) is the conjugate base of sodium hydrogen sulfate (CAS 7681-38-1) : pKa =1.92 (CRC Handbook of Chemistry and Physics)