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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The substance is a green solid powder at 20 °C and 1013 hPa.

The substance has a median particle size of D50 = 472 µm, determined using laser diffraction measurement

The evaluation of thermal properties was based on a DSC analysis (0-520 °C): as the substance decomposes in the temperature range of 246.03 – 284.44 °C (onset = 253.76 °C), melting point and a boiling point were not detected.

A relative density of 1.6201 at 20.0 °C was determined using the pycnometer method.

The substance is soluble in water (5.61-17.43 g/l) at room temperature and its partition coefficient (n-octanol/water) stated as Log Pow is < -2 ( -3.279 ± 0.130). For both determinations the shake-flask method was used, combined with a validated photometric method.

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 and it is not a desired property of the material.

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 substance is not flammable and a relative self ignition temperature of 277.6 °C was found.

Screening procedure failed to evidence any reason for concern related to explosive properties of the substance, as decomposition was observed in the temperature range of 246.03 – 284.44 °C (onset = 253.76 °C) but the related energy of the observed exothermal event is 211.11 J/g.

The substance is considered not to be potentially oxidising, on the basis of the chemical structure of the substance.