m-Cresol Purple Indicator

  • CAS :
    2303-01-7
  • REF :
    24977
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QUANTITY PRICE ENQUIRY
1 gm Rs 400.00
5 gm Rs 1520.00

Product Information

  • Formula: C₂₁H₁₈O₅S
  • CAS: 2303-01-7
  • EC No.: 218-963-8
  • M (Molar Mass): 382.43 g/mol
  • pH Transition Range: 1.2 (red) to 2.8 (yellow), 7.4 (yellow) to 9.0 (purple)
  • λmax: 530 nm (acidic), 575 nm (basic)

Chemicals Properties

  • Dye Content: ≥ 80%
  • Appearance: Greenish-brown powder
  • pH Ranges: First range 1.2-2.8, second range 7.4-9.0
  • Loss on Drying: ≤ 2.0%
  • Sulfated Ash: ≤ 1.0%
  • Solubility: Soluble in ethanol, methanol; slightly soluble in water
  • Indicator Test: Satisfactory for both pH ranges
  • Heavy Metals (as Pb): ≤ 30 ppm
  • Absorbance (0.1% in ethanol): E₁%₁cm ≥ 200 at 530 nm

Hazard Information

  • Hazard: May be harmful if swallowed or inhaled.
  • Safety: Use with adequate ventilation. Avoid dust formation.
  • Storage: Store in tightly closed container at room temperature.