Phenolphthalein

Phenolphthalein

CAS 77-09-8SolventsPHENO

Specifications

CAS No.
77-09-8
Appearance
White to pale yellow Powder
Melting point
261-263℃
Boiling point
Not available (decomposes)

Product overview

Phenolphthalein is an organic compound commonly used as an acid-base indicator. It is a white to pale yellow crystalline powder that is soluble in organic solvents such as ethanol but slightly soluble in water. In acidic solutions, it is colorless, while in basic solutions, it turns pink to purple.

Key features

  • High purity (≥99%) ensuring reliable performance
  • Stable chemical properties under normal storage conditions
  • Clear color change in acid-base titration, easy to observe
  • Low toxicity and safe to handle when following standard procedures
  • Standard packaging (25Kg/Drum) suitable for industrial use

Applications

Acid-base indicator in chemical laboratories and industrial quality control
Raw material in pharmaceutical industry for certain laxative products
Component in pH test papers and indicator solutions
Used in educational experiments to demonstrate acid-base reactions
Applied in some chemical synthesis processes as a catalyst or intermediate
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