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Physical & Chemical properties

Endpoint summary

Administrative data

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Additional information

The substance is a brown solid powder at 20 °C and 1013 hPa. The substance has a median particle size of D50 = 22 µm, determined using laser diffraction measurement.

The evaluation of thermal properties was based on a DSC analysis (0-520 °C): the substance does not melt completely up to 520 °C; consequently its boiling temperature is negligible.

A relative density of 1.6787 at 20.0 °C was determined using the pycnometer method.

The substance is very soluble in water at room temperature (159.00 ± 5.58 g/L) and its partition coefficient (n-octanol/water) stated as Log Pow is -0.527 ± 0.116. For both determination the shake-ask 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 substance is not flammable but a relative self ignition temperature of 242.3 °C was found.

Screening procedure failed to evidence any reason for concern related to explosive properties of the substance, as no exothermal event was detected up to 520 °C.

The substance is considered not to be potentially oxidising, on the basis of the information and review of the substance.