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Tartrazine (Cl 19140) also known as Acid yellow 23, is a hydrophilic polyanionic dye. It is a sulfonic dye, which can be synthesized by the reaction of sulfanilic acid with 3-carboxy-l-(4-sulfophenyl)-5-pyrazolone.
Product Name
Tartrazine, Dye content ≥85 %
form
powder
Quality Level
composition
Dye content, ≥85%
technique(s)
titration: suitable
color
orange
solubility
H2O: 10 mg/mL, clear, yellow to orange
density
2.12 at 20 °C
εmax
435-500 at 425-429 nm in water
application(s)
diagnostic assay manufacturing
hematology
histology
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