Tartrazine Properties, Molecular Formula, Applications - WorldOfChemicals

Tartrazine Properties


Tartrazine 3D Structure-Molecule 3D Struture
Molecule 3D Structure Image
Tartrazine Structure-Molecule Struture
Molecule Structure Image



Tartrazine is a synthetic lemon yellow azo dye used as a food coloring. It is a commonly used color all over the world, mainly for yellow, but can also be used with Brilliant Blue FCF or Green S to produce various green shades.

Chemical Properties

Appearance Deep yellow powder
CAS Number 1934-21-0
EINECS Number 217-699-5
IUPAC Name Trisodium (4E)-5-oxo- 1-(4-sulfonatophenyl)- 4-[(4-sulfonatophenyl)hydrazono]- 3-pyrazolecarboxylate
Melting Point 300 ºC
Molar Mass 534.3 g/mol
Molecular Formula C16H9N4Na3O9S2
RTECS Number UQ6400000
Solubility 260 g/l
Synonyms Acid Yellow 23;C.I. 19140;FD&C Yellow 5;Tartrazine;1H-Pyrazole-3-carboxylicacid, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[2-(4-sulfophenyl)diazenyl]-,Sodium Salt