Registration Dossier

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Additional information

m-(2,3-epoxypropoxy)-N,N-bis(2,3-epoxypropyl)aniline is a yellow organic liquid.

The test item showed a glass transition at - 31°C and no boiling point was observed below the temperature at which decomposition started, i.e. at 225°C. The relative density of m-(2,3-epoxypropoxy)-N,N-bis(2,3-epoxypropyl)aniline at 20°C was determined to be 1.23. The particle size distribution test was technically not feasible as the substance is marketed and used in a liquid form.

The vapour pressure was determined to be 6.5 E-6 Pa at 25°C (2.9 E-6 Pa at 20°C) and the partition coefficient Log Pow to be 1.6.

The water solubility of m-(2,3-epoxypropoxy)- N,N-bis(2,3-epoxypropyl)aniline at 20°C was 1.78 g/l. The surface tension was found to be 62.5 mN/m at 20°C and at 90% of the saturation concentration. The flash point was determind to be 212°C using the Pensky-Martens closed-cup method and the auto-ignition temperature to be 395°C.

m-(2,3-epoxypropoxy)-N,N-bis(2,3-epoxypropyl)aniline is neither flammable, explosive and have no oxidising properties.

The stability testing of the substance in organic solvents (required in section 9.15) does not need to be conducted as the substance is stable in organic solvents.

The dissociation constant value comes from the read-across with an analogue substance (p-(2,3 -epoxypropoxy)-N,N-bis(2,3 -epoxypropyl)aniline and was determined to be 3.25 using the spectrophotometric method. This pKa value corresponds to dissociation of a basic group in the molecule. The viscosity is found to be 7000 - 13000 mPa s at 25°C.

Based on the similarities of the above physical and chemical properties to p-(2,3-epoxypropoxy)-N,N-bis(2,3-epoxypropyl)aniline, a read across has been proposed to fullfil toxicological endpoints where no data is available on the target substance. Please see the relevant endpoint summaries and read across justification document enclosed in Chapter 13.