Registration Dossier
Registration Dossier
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Reaction products of diazotised 5-amino-2-anilinobenzenesulphonic acid coupled with resorcinol, subsequently coupled with diazotised 3-amino-4-hydroxy-5-nitrobenzenesulphonic acid, subsequently coupled with diazotised sodium 2-amino-4,6-dinitrophenoxide, subsequently coupled with diazotised 4-nitroaniline, sodium salts
EC number: 601-986-0 | CAS number: 12219-56-6
Endpoint summary
Administrative data
Description of key information
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-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 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.
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