o-Cresolphthalein (pH indicator)

  • CAS :
    596-27-0
  • REF :
    24975
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QUANTITY PRICE ENQUIRY
5 gm Rs 230.00
25 gm Rs 630.00

Product Information

  • Formula: C₂₂H₁₈O₄
  • CAS: 596-27-0
  • EC No.: 209-882-5
  • M (Molar Mass): 346.38 g/mol
  • mp (Melting Point): 218-223°C
  • pH Transition Range: 8.2 (colorless) to 9.8 (red)
  • λmax: 570 nm (basic form)

Chemicals Properties

  • Dye Content: ≥ 85%
  • Appearance: White to pale yellow crystalline powder
  • pH Transition: Clear at pH 8.2, red at pH 9.8
  • Loss on Drying: ≤ 1.0%
  • Sulfated Ash: ≤ 0.5%
  • Solubility: Soluble in ethanol, methanol; insoluble in water
  • Indicator Test: Satisfactory (clear color change in specified pH range)
  • Heavy Metals (as Pb): ≤ 20 ppm
  • Melting Range: 220-225°C

Hazard Information

  • Hazard: May be harmful if swallowed. Causes eye irritation.
  • Safety: Avoid breathing dust. Use with adequate ventilation.
  • Storage: Store in tightly closed container at room temperature. Protect from light.