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A yellow monoazo dye discovered in 1884 by H. Ziegler. Tartrazine is used to color food, drugs, cosmetics, Wool, nylon, Jute, Leather, Silk, Paper, and acid dyeable acrylic fibers. Because many people experience allergic reactions, the use of tartrazine as a food colorant is banned in Norway and Austria. It is still used in many other countries, including the U.S., in colas, candies, soups, jelly, and many other food products.

Chemical structure


Synonyms and Related Terms

CI 19140; Acid Yellow 23; Food Yellow 4; FD&C Yellow 5; Solvent Yellow 57; Lampronol Yellow J; Pigment Yellow 100 (aluminum lake); Tartrazin (Deut.)


  • Hygroscopic.
  • May cause allergic skin reactions, migraines, or blurred vision.
  • Fisher Scientific: MSDS

Physical and Chemical Properties

Composition C16H9N4O9S2Na3
CAS 1934-21-0
Melting Point 215 C (dec)
Density 1.93 g/ml
Molecular Weight mol. wt. = 534.35

Resources and Citations

  • Colour Index International online at www.colour-index.org Comment: discoverer, CI, CAS, uses

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