Tartrazine, also commonly referred to as FD&C Yellow 5, is an organic trisodium salt of tartrazine acid. It is an anionic, hydrophilic azo dye. It is also known as Yellow 5 Lake, Acid Yellow 23 and Food Yellow 4. It is a commonly used food colorant with a E number E102.
|Name of Product||Tartrazine|
|Synonyms||Acid yellow 23; Yellow 5; Food Yellow 4; Aizen tartrazine; FD&C Yellow No. 5; Yellow 5 Lake; Tartraphenine; Tartran Yellow; Amacid Yellow T; Cilefa Yellow T|
|Molecular Weight||534.4 g/mol|
|Color Index No||19140|
|1||Appearance (form)||Solid Powder|
|2||Appearance (color)||Bright Orange to Yellow|
|3||Melting Point||> 300°C|
|4||Solubility||Soluble in Water (20 g/100 mL)
Soluble in Glycerol (18 g/100 mL)
Negligibly soluble in Ethanol (0.8 mg/mL)
|5||Log P||log Kow = -10.17 (estimated)|
|6||UV-vis (λmax)||425 nm|
|7||Decomposition||When heated to decomposition it emits very toxic fumes of nitrogen, sulfur and sodium oxide|
Q. Where does tartrazine come from?
Tartrazine is a synthetic yellow food dye. It is one of numerous azo food dyes derived from petroleum products.
Q. Is tartrazine bad for you?
Tartrazine is only harmful to certain individuals; not everyone is affected by it or reacts to it, and there is no method to determine how sensitive an individual is to it.
Q. Why is tartrazine banned?
Countries like Sweden, Switzerland, Norway and Austria have banned the use of Tartrazine due to it’s potential to cause anaphylactic (severe allergy) reactions.
Food Dyes | An overview of all the dyes currently used in Food
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