Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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EC number: 222-059-3 | CAS number: 3332-27-2
Endpoint summary
Administrative data
Description of key information
Additional information
The substance is manufactured and supplied as an aqueous solution. For the purposes of REACH compliance it is necessary to have a dry sample of the substance. Previous attempts to freeze dry other members of the category, namely C12-14 and C12-18 AO had proved unsuccessful, with either a high residual water content (23 %w/w in the case of C12-18 AO) or degradation over a short period of time (in the case of C12-14 AO). Due to this previous experience, it was decided not to attempt to freeze dry a sample of C14 AO and instead to use literature data and read across where necessary as described below.
The substance is a highly hygroscopic white solid with a melting point in the range of 125 -129 °C. Aliphatic amine oxides undergo thermal decomposition/Cope elimination between 110 -200 °C. The relative density of the substance is approximately 0.716 based on read across to C12 -14 AO. The vapour pressure was estimated to be 6.7E-06 Pa at 25 °C using MPBPWIN v 1.43 (modified grain method). The substance is surface active with a surface tension of 32.4 mN/m at 21 °C. The dissociation constant is 4.01 based on read across from experimental data for the C12 -14 AO. The substance is predicted to be non-explosive based on chemical structure and oxygen balance of the AO constituents and non-oxidising, based on chemical structure.
The substance is non-flammable based on read across to a test performed on C12 -14 AO. The log Pow is < 2.7. This value is considered to be conservative as it is based on the measured values for solubility in n-octanol of C12-14 AO (33.9 g/L) and literature data for the critical micelle concentration of the C14 alkyl dimethylamine oxide (2.7E-04 mol/L, equivalent to 0.0695 g/L).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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