C.I. Acid Yellow 23

• Category :

  Dyestuffs and Pigments/Acid Dyes

• Synonyms :

  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-sulfonatophenyl)-4-[(E)-(4-sulfonatophenyl)diazenyl]-1H-pyrazole-3-carboxylate;

• CAS NO :

  1934-21-0

• EC NO :

  217-699-5

• Molecular Formula :

  C₁₆H₉N₄Na₃O₉S₂

• Molecular Weight :

  534.3634

• Main Specifications :

• InChI :

  InChI=1/C16H12N4O9S2.3Na/c21-15-13(18-17-9-1-5-11(6-2-9)30(24,25)26)14(16(22)23)19-20(15)10-3-7-12(8-4-10)31(27,28)29;;;/h1-8,21H,(H,22,23)(H,24,25,26)(H,27,28,29);;;/q;3*+1/p-3/b18-17+;;;

• Uses :

  detergent, agriculture

• Molecular Structure :