FD and C Yellow No. 5 CAS No.1934-21-0 / Cat No.EBD923
Tartrazine
C.I. 640
C.I. 19140
C.I. Acid Yellow 23
C.I. Acid Yellow 23, trisodium salt
C.I. Food Yellow 4
C.I. Acid Yellow 23, trisodium salt (VAN) (8CI)
Tartrazine
4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1H-Pyrazole-3-carboxylic acid, trisodium salt
Acid Yellow 23
Dihydro-5-oxo-1-(4-sulfophenyl)-4-((4-sulfophenyl)azo)-1H-pyrazole-3-carboxylic acid, trisodium salt
FD&C Yellow No. 5
Filter Yellow
Food Yellow No.4
Pyrazole-3-carboxylic acid, 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-((4-sulfophenyl)azo)-, trisodium salt
Tartrazine C
Tartrazine C.I.19140
Trisodium 1-(4-sulfonatophenyl)-4-(4-sulfonatophenylazo)-5-pyrazolone-3-carboxylate
Trisodium 1-(4-sulfophenyl)-4-((4-sulfophenyl)azo)-1H-pyrazole-3-carboxylate
trisodium (4Z)-5-oxo-1-(4-sulfonatophenyl)-4-[(4-sulfonatophenyl)hydrazono]-4,5-dihydro-1H-pyrazole-3-carboxylate
trisodium (4E)-5-oxo-1-(4-sulfonatophenyl)-4-[(4-sulfonatophenyl)hydrazono]-4,5-dihydro-1H-pyrazole-3-carboxylate
trisodium 5-hydroxy-1-(4-sulfonatophen
Properties
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Appearance:
Deep yellow powder
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Melting point:
300 °C
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Solubility:
260 g/L (30 ºC)
Safety Information
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Symbol:
-
Signal words:
Danger -
Hazard statements:
H317 May cause an allergic skin reaction.
H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled.
-
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P342+P311 IF experiencing respiratory symptoms: call a POISON CENTER or doctor/physician.
NMR Spectrum
1H NMR
13C NMR
