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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Physical & Chemical properties


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Description of key information

Basic Yellow 28 acetate is not flammable, however, the 40% acetic acid solution might form a flammable gas.

Key value for chemical safety assessment

non flammable

Additional information

Basic Yellow 28 acetate is only stable in presence of significant concentrations of free acetic acid; it cannot be isolated as such.

The methyl sulfate salt of Basic Yellow 28 is non-flammable. Basic Yellow 28 as the acetate salt is an aqueous solution in 40 % acetic acid. Therefore the acetic acid solution is more relevant for the assessment of the flammability of Basic Yellow 28 acetate.

Justification for classification or non-classification