Direct Yellow 4Direct Yellow 4 is a chemical compound with the formula C26H18N4Na2O8S2. This is a direct dis-azo dye, a diamine derivative with separated azo groups. Due to its properties, value and strength, it is considered one of the most important dyes based on stilbene. Read from the Chembox of the Wikipedia article Direct Yellow 4, revision 1323725655.

Property

Value

Formula

C26H20N4NaO8S2, 603.59 g/mol

Melting point

250 °C

Density

1.5 g/cm³

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