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The basic characteristics of tartrazine and caffeine.
| Chemical | Tartrazine | Caffeine |
|---|---|---|
| Chemical formula | C16H9N4Na3O9S2 | C8H10N4O2 |
| Chemical class | Azo dye | Methylxanthine alkaloid |
| Molecular weight (g/mol) | 534.4 | 194.19 |
| Color | Yellow | Colorless |
| λ max (nm) | 428 | 273 |
| C.I. number | 19140 | — |
| Nature | Anion dye | — |
| Molecular structure |
|
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