Description
  • Chemical Name
    Phenolphthalein
  • Concentration
    1% (w/v)
  • Solvent
    Isopropyl Alcohol (IPA)
  • Grade
    Indicator Grade
  • Form
    Liquid

Description

What is Lab Pro Phenolphthalein 1% in IPA?

Lab Pro Phenolphthalein 1% in IPA is a ready-to-use indicator solution formulated with phenolphthalein at 1% (w/v) in isopropyl alcohol. The solution is neutralized and supplied in liquid form for analytical and laboratory applications.

Phenolphthalein is an organic compound commonly used as a pH indicator. In solution, it remains colorless under acidic conditions and turns pink in basic conditions.

Key Features

  • Phenolphthalein indicator solution
  • 1% (w/v) concentration
  • Indicator grade
  • Liquid formulation
  • Ready-to-use

Applications

  • pH indicator in acid–base titrations
  • Chemical analysis and analytical procedures
  • Educational demonstrations of pH change

Packaging Details

  • Available Sizes: 1 Pint, 20 L
  • Container Material: Natural poly bottle
  • Form: Liquid

Standards and Certifications

  • Lab Pro CofA
  • Lab Pro SDS
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Chemical Information

Chemical Name or Material Phenolphthalein
Name Note Neutralized
Molecular Formula C₂₀H₁₄O₄
Molecular Weight 318.32

CAS Composition

CAS Numbers 67-63-0, 7732-18-5, 77-09-8
CAS Min % 39.0, 59.0, 0.5
CAS Max % 41.0, 61.0, 1.5

Specifications

Percent Purity 1% (w/v)
Appearance (Color) Colorless to pink
pH 8
Physical Form Liquid
Grade Indicator


Articles

FAQs

What is Lab Pro Phenolphthalein 1% in IPA used for?

Lab Pro Phenolphthalein 1% in IPA is used as a pH indicator in acid–base titrations. It helps identify titration endpoints by changing from colorless in acidic solutions to pink in basic conditions during analytical procedures.

Why is phenolphthalein commonly used as an indicator?

Phenolphthalein provides a sharp, easily visible color change near pH 8.2–10. This makes it ideal for detecting endpoints in titrations involving strong bases and weak acids, improving accuracy and repeatability in laboratory analyses.

What does “1% (w/v) in IPA” mean?

A 1% (w/v) solution means one gram of phenolphthalein is dissolved per 100 mL of solution. Isopropyl alcohol is used as the solvent to ensure stability, solubility, and consistent indicator performance.

Is this phenolphthalein solution ready to use?

Yes, this product is supplied as a neutralized, ready-to-use liquid solution. No dilution or preparation is required, making it convenient for routine laboratory testing, educational demonstrations, and analytical workflows.

What applications is this indicator best suited for?

This phenolphthalein solution is best suited for acid–base titrations, general chemical analysis, and instructional laboratory use. It is commonly used in quality control, analytical chemistry, and teaching environments requiring clear pH indication.