1934-21-0 Tartrazine

product Name	Tartrazine
CAS No	1934-21-0
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
Molecular Formula	C₁₆H₉N₄Na₃O₉S₂
Molecular Weight	534.3634
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+;;;
EINECS	217-699-5
Molecular Structure
Melting point	300℃
Water solubility	260 g/L (30℃)
Hazard Symbols
Risk Codes
Safety Description	S24/25:;
MSDS	Material Safety Data Sheet

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1934-21-0 Tartrazine