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Tartrazine

Tartrazine Tartrazine
IUPAC Name
Trisodium (4E)-5-oxo-1-(4-sulfonatophenyl)-4-[(4-sulfonatophenyl)hydrazono]-3-pyrazolecarboxylate
HS Code
3204.19.82
Formula
C16H9N4Na3O9S2
Appearance
Yellow Powder
Cas No.
12225-21-7
Common Names
Yellow azo dye, Tartrazine
Packaging
- 1000 @ 25 kg PP woven bag inside PE liner, 25MT/20'FCL
- 25kgs/bag 25kgs/drum
- As per customer’s request
Category
  • Dyes and Pigments
  • Food
Sub Category
  • Dyes and colors
  • Preservatives

BRIEF OVERVIEW

Tartrazine is a bright yellow anionic and hydrophilic powder used as food coloring. It is a synthetic lemmon yellow and yellow azo dye. It  can also be used with Brilliant Blue FCF (FD&C Blue 1, E133) or Green S (E142) to produce various green shades. It is famously known by its E number E102.

The dye consists of trisodium 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1H-pyrazole-3- carboxylate.

MANUFACTURING PROCESS

Tartrazine is manufactured by making it react with diazotized 4-aminobenzenesulfonic acid (sulfanilic acid, SA) with 5-oxo-1-(4-sulfophenyl)-2-pyrazoline-3-carboxylic acid (Pyrazolone T, PyT) or with the methyl ester, the ethyl ester, or a salt of this carboxylic acid. The resulting compound is purified and isolated as sodium salt.

Another method for manufacturing tartrazine is by condensing phenylhydrazine-p-sulfonic acid with dioxosuccinic acid or oxalacetic acid derivatives.

FOOD INDUSTRY

Used in desserts, confectionaries, chips, beverages, snacks, spreads, jams, and other processed foods.

HOUSEHOLD ITEMS

Liquid and bar soaps; lipsticks, lip balms, nail polish; other cosmetic products mainly for the color.

PHARMACEUTICAL INDUSTRY

Some medications include tartrazine to give a yellow, orange or green hue to a liquid, capsule, pill, lotion, or gel, primarily for easy identification.

OTHERS

Other products, such as household cleaning products, paper plates, pet foodscrayons, inks for writing instruments, stamp dyes, face paints and envelope glues, may also contain tartrazine.

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