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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The test item is a dark brown, solid powder at 20 °C and 1013 hPa and the mean particle size (D50) of the test item is 48.6 μm.

The evaluation of thermal properties was based on a DSC analysis (0-520 °C): the substance does not melt up to 520 °C and no endothermal or exothermal events were observed.

The relative density of the test item is 1.5526 ± 0.0006 at 20 ± 0.2°C.

The substance is very soluble in water at room temperature (9.39 – 68.18 g/L at 20.0 ± 0.5 °C and pH 5.90-6.15) and its partition coefficient (n-octanol/water) stated as Log Pow is -1.078 ± 0.156 at 22.2 ± 0.2 °C and pH 5.90-6.05. For both determination the shake-flask method was used, combined with a validated photometric method.

No reactions with water or emission of flammable gases have ever been noted. Furthermore, for soluble dyes a reaction with water is not a desirable property from the use point of view. Therefore, the substance is not expected as a substance that in contact with water may react emitting flammable gases.

The vapour pressure of the test substance is expected to be negligible as the melting point is above 300 °C.

The surface activity is not expected for the substance as it is not a desired property of the material.

The flash point of the test item is not a relevant property as it is a solid which does not melt up to 520 °C.

The substance is not flammable but a relative self ignition temperature of 272.2 °C was found.

Screening procedure failed to evidence any reason for concern related to both explosive and self-reactive properties of the substance, as no exothermic or endothermic events occur between 0 °C and 520 °C.

The substance is considered not to be potentially oxidising, based on a review of the properties of the substance.

Additional information