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Trisodium 2-(4-Sulphophenylazo)-1,8-dihydroxynaphthalene-3,6-disulphonate (SPADNS) indicator grade
Irritant
Trisodium 2-(4-Sulphophenylazo)-1,8-dihydroxynaphthalene-3,6-disulphonate (SPADNS) indicator grade
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Irritant
Trisodium 2-(4-Sulphophenylazo)-1,8-dihydroxynaphthalene-3,6-disulphonate (SPADNS) indicator grade

Specification Test Results

  • Appearance:
    Dark red-brown Crystalline powder
  • Infrared spectrum:
    Conforms
  • UV spectrum:
    Complies
  • HPLC:
    ≥96.0 %
  • Specific optical rotation:
    -20° to -28° (20°C, 589 nm) (C=1 in MeOH)

Specification Test Results

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