Description

 

Parameter DetailsC13H12N4S
Chemical Name 1-Naphthol Benzein
CAS Number 145-50-6
Chemical Formula C27H18O2
Molecular Weight 374.43 g/mol
Appearance Orange to reddish crystalline powder
Solubility Soluble in organic solvents like ethanol and acetone; slightly soluble in water
Melting Point 180–185 °C
Boiling Point Decomposes before boiling

Most Common Uses :

  •  Used as a pH indicator in analytical chemistry.
  • Commonly employed in acid-base titrations.
  •  Applied in industrial dye formulations and colorimetric analysis.

Storage Reccomendation :

  • Store in a tightly closed container, in a cool, dry, and well-ventilated area. Protect from light and moisture.

Hazards :

  • May cause skin and eye irritation.
  •  Harmful if ingested or inhaled.
  • Handle with protective gloves and safety goggles.

Other Information :

    • Changes color depending on pH, making it useful for laboratory titrations.
    • Structurally similar to phenolphthalein, another widely used pH indicator.