Acid Yellow 42

• Catalog No.: 210374
• CAS Number: 6375-55-9
• M. F.: C32H24N8Na2O8S2
• M. W.: 758.6913

SYNONYMS

• IUPAC name: disodium 5-[2-(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]-2-{4-[2-(3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)diazen-1-yl]-2-sulfonatophenyl}benzene-1-sulfonate
• IUPAC Traditional name: disodium 5-[2-(3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-yl)diazen-1-yl]-2-{4-[2-(3-methyl-5-oxo-1-phenyl-4H-pyrazol-4-yl)diazen-1-yl]-2-sulfonatophenyl}benzenesulfonate

DATABASE IDS

• EC Number: 228-940-9
• Color Index Number: 22910
• CAS Number: 6375-55-9
• MDL Number: MFCD00003139

PROPERTIES

• Compostion: Dye content, 25%
• Empirical Formula (Hill Notation): C32H24N8Na2O8S2
• Absorption Wavelength: λmax 410 nm
• Melting Point: 263 °C (dec.)(lit.)
• RTECS: DV3910000
• German water hazard class: 3