30 mL bottle of 1% Phenolphthalein aqueous solution for chemical activities only.
Perform clear and precise acid–base analysis with our phenolphthalein indicator solution, prepared at a 1% concentration for reliable laboratory use. This classic pH indicator is widely used in titrations, neutralization reactions, and instructional chemistry activities due to its sharp and easily observed color change. Essential for chemical activities and analytical experiments, phenolphthalein provides consistent results when identifying basic solutions and reaction endpoints. The 30 mL bottle offers a practical volume for repeated classroom and laboratory use.
Property
Details
Chemical formula
C₂₀H₁₄O₄
Formula weight
318.32 g/mol
CAS number
77-09-8
Characteristics
Colorless solution; turns pink in basic solutions
Physical state
Liquid aqueous solution
Storage code
Green — general storage
Did You Know?
Phenolphthalein remains colorless in acidic and neutral solutions but turns a vivid pink in basic environments, making it one of the most recognizable indicators in chemistry. This dramatic shift allows students to visually pinpoint the exact moment a reaction reaches its endpoint during titrations. The compound has also played a role in the historical development of analytical chemistry, helping standardize quantitative acid–base measurements still used today.
