Phenol Red

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 an