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CAS 1657-16-5 — صبغة صفراء 4

Pigment Yellow 4 is a synthetic organic pigment used in coatings, plastics, and inks for its bright yellow color and good lightfastness. It has a CAS number of 1657-16-5, a molecular formula of C16H14N4O4, and a molecular weight of 326.31 g/mol. It is stable at ambient storage conditions and carries no signal word. Molekula supplies Pigment Yellow 4 from research to bulk quantities with full documentation and ISO 9001:2015 traceability.