SZSE：002741
Chemical Reagents
Indigo carmine (C.I. 73015)COA Report
  • CAS No.： 860-22-0
  • Molecular weight：466.35
  • Aliases： Indigo Carmine; Food Blue 1; 5,5'-Indigodisulfonic acid disodium salt; Disodium 5,5'-(2-(1,3-dihydro-3-oxo-2H-indazol-2-ylidene)-1,2-dihydro-3H-indol-3-one)disulphonate
  • Molecular formula：C16H8N2Na2O8S2
  • EC No.：212-728-8
  • HS-No：2933990090
Information
Specification category：
Product No. Product name specifications
1.18025.030 Indigo carmine AR25g
Characteristic： pH value:~ 5.3(100 g/l H2O,20 ℃)
Bulk density(kg/m3):~ 700-900
Solubility:water 10 g/l (25 ℃)
,slightly soluble in ethanol (20 ℃)
Technical indicators：
Item AR
Assay(C8H5NO2) ≥98.0%
Melting range 201-204(2℃ Interval)
Sensitivit test to thiophene Pass
Solubility test in ethanol Pass
Residue on ignition(as SO4) ≤0.1%
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