S300179 | Indigo Carmine (C.I. 73015)

CAS Number

860-22-0

Formula

C20H10Na2O5

Weight

466.35

Acid Blue 74; 5,5'-Indigodisulfonic acid, disodium salt

  • Synonym:   Indigo carmine (C.I. 73015)
  • EC Number:   212-728-8
  • Density:   0.71 g/cm3 at 29°C
  • Melting Point:   >340°C
  • Specifications
    Potency >2000 mg/kg LD50, oral (Rat)
    Composition dye content, ≥80% spectrophotometric assay
    Loss ≤10% loss on drying, 110°C
    pH 7 (20°C, 10 g/L in H2O)
    Solubility 1 g/L
    Bulk Density 700‑900 kg/m3
    λmax 608-612 nm in water

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