15 mL bottle of 0.04% Phenol Red indicator solution for laboratory use.
Support accurate chemical analysis with our phenol red indicator solution, precisely prepared at a 0.04% concentration for dependable laboratory performance. Phenol red is widely used as a two-color pH indicator, an acid–base indicator, and a diagnostic reagent in a variety of chemistry experiments. Its clear and reversible color transition makes it especially valuable for titrations, buffer studies, biological media testing, and instructional demonstrations. Essential for any chemistry student, the 15 mL bottle provides a convenient volume for repeated experimental use.
Property
Details
Chemical formula
C₁₉H₁₄O₅S
Formula weight
354.38 g/mol
CAS number
143-74-8
Characteristics
Red to yellow indicator solution; sharp color change
Physical state
Liquid solution
Storage code
Green — general storage
Did You Know?
Phenol red changes color over a pH range that closely matches many biological and chemical systems, shifting from yellow in acidic conditions to red in neutral and slightly basic environments. Because of this, it is commonly used not only in chemistry labs but also in cell culture media to visually monitor pH changes in real time. Its ability to act as both a teaching tool and a diagnostic indicator makes phenol red a unique bridge between chemistry and biology.
