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Tartrazine

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Tartrazine

Molecular formula: C16H9N4Na3O9S2 CAS# 1934-21-0
Categories: Organic salt , Food coloring , Azo compound
PubChem CID: 164825 | CB2219301 | ChemSpider ID: 10606981
Names
English:
1H-Pyrazole-3-carboxylic acid, 5-hydroxy-1-(4-sulfophenyl)-4-[(E)-2-(4-sulfophenyl)diazenyl]-, sodium salt (1:3)(CAS)
C.I. Acid Yellow 23
E102
EINECS:217-699-5
Pyrazole-3-carboxylic acid, 5-hydroxy-1-(p-sulfophenyl)-4-(p-sulfophenyl)azo-, trisodium salt
Pyrazole-3-carboxylic acid, 5-hydroxy-1-(p-sulfophenyl)-4-[(p-sulfophenyl)azo]-, trisodium salt
Tartrazine [Wiki]
Trisodium 5-hydroxy-1-(4-sulfonatophenyl)-4-[(E)-(4-sulfonatophenyl)diazenyl]-1H-pyrazole-3-carboxylate(IUPAC)
trisodium;5-oxo-1-(4-sulfonatophenyl)-4-[(4-sulfonatophenyl)diazenyl]-4H-pyrazole-3-carboxylate(IUPAC)

Variants of the formula:

|`//`\<`/NaO3`S>`||/\\/N\\N/`|<`\NaOOC>_ppN_pN<_p<_(a-54)OH>_pp>-\\-//<`\`=`/>-SO3Na
|<_(a54)<_pp6O>_q6O^-_(A0,N0)Na^+>_qqN_qN<-\\-//<`\`=`/>-S<_qq6O><_(A0,N2)O>_p6O^-_(A0,N0)Na^+>_q<_(a54)OH>_qq_(a54)N`//N`\`||`\`//<|\\/>`\S`\O\`|O|`/O`^-_(A180,N0)Na`^+
Elemental composition
Can't show the diagram.
Symbol Element Atomic weight Number of atoms Mass percent