Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Based on the available data on its physical and chemical properties,11 -aminoundecanoic acid is a white crystalline powder (diameter of particles between 5 and 70 µm) with a melting point of approximately 191°C at normal pressure and a relative density of around 1.17 at 26°C. No boiling point is available because there seems to be decomposition or polycondensation of 11 -aminoundecanoic acid before boiling. The vapour pressure is estimated to be very low (estimation by calculation between 3.85E-02Pa and 2.07E-07 Pa). It is considered as moderately soluble in water based on a water solubility of 800 mg/L, and to have a low potential for bioaccumulation based on a calculated logKow value of -0.16. Its dissociation constants are as follows: pKa1 (amine) = 10.8 -11.15 and pKa2 (carboxylate) = 4.45 - 4.65.

Besides, 11 -aminoundecanoic acid has been shown to be non flammable (EU method A10) and, by deposition on hot surfaces, to not flame spontaneously up to 360°C and to decompose at temperature below 240°C. Based on its chemical structure, 11-aminoundecanoic acid is NOT expected to be explosive nor to have oxidising properties.