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Acid Yellow 151 is an odourless and soluble dark yellow powder (5.14 g/l). The substance decomposes before melting and boiling, for this reason neither vapour pressure nor flash point are defined. Surface tension is not a desirable property.

Acid Yellow 151 has a relative density = 1.531 and a logPow = 0.4114. The median mass diameter is 4.769 µm. The substance is non flammable, non oxidising, non explosive and has no spontaneous ignition property.