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Puerto Rico
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Alizarin complexone dihydrate, pure indicator grade
Alizarin complexone dihydrate, pure indicator grade
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Alizarin complexone dihydrate, pure indicator grade

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Specification Test Results

  • Appearance:
    Yellow to orange to brown Powder
  • Infrared spectrum:
    Conforms
  • Water:
    ≤9.5 % (K.F.)
  • Appearance of solution:
    (0.2% soln. in 0.02 M NaOH) clear, deep red-purple
  • UV Lambda max:
    425 to 430 nm (C=10 mg/l, Methanol)
  • Titration with NaOH:
    97 to 103 % (On dry substance)

Specification Test Results