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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

Additional information

Dodecanedioic acid (CAS Number: 693-23-2) is an organic white solid at normal temperature and pressure, marketed in the form of pellets.

Melting point: 128 ºC

Boiling point: 250 ºC (13.33 hPa), decomposition at higher temperatures

Relative density at 20 ºC: 1.172

Vapour pressure (at 20 °C): 1.5 x 10E-10 hPa

Log Kow (at 25 ºC): 3.2

Water solubility (at 23 ºC): 30 mg/L (pH 5)

Flammability: not highly flammable

Explosiveness and oxidising properties: excluded from structural considerations

Stability in organic solvents: not critical

Dissociation constant: pKa1: 4.45-4.58, pKa2: 5.05-5.18