Phenolphthalein, identified by its CAS number 77-09-8, is a compound celebrated for its dual utility in scientific laboratories and commercial product formulation. Its most renowned application is as a pH indicator. In neutral or acidic conditions, it presents as colorless, but upon encountering alkaline environments (pH 8.2-10.0), it exhibits a characteristic pink to magenta coloration. This distinct visual cue is critical for the precise endpoint determination in titration, a fundamental practice in analytical chemistry. The consistent performance of Phenolphthalein powder 99% is therefore highly valued by researchers and quality control professionals.

Beyond the laboratory, Phenolphthalein also contributes to the development of cosmetic raw materials and is incorporated into various oral care chemicals. The stringent quality standards required for these applications mean that sourcing high-purity Phenolphthalein is essential. Manufacturers often seek out reliable Phenolphthalein suppliers who can guarantee product consistency and adherence to safety regulations. The stability of the compound, when stored correctly, also makes it an attractive ingredient for long-term product formulations.

When considering the acquisition of Phenolphthalein, factors such as its physical form (typically a white powder), its CAS number (77-09-8), and its grade (e.g., CP/EP/BP) are important. Prospective buyers often research Phenolphthalein for sale to compare pricing and availability from different sources. Proper storage is key to maintaining its quality; it should be kept sealed in a cool, dry location, shielded from light and moisture, to preserve its efficacy for its typical shelf life of two years.

The enduring relevance of Phenolphthalein, from its critical function in pH indication during complex chemical analyses to its integration into consumer products, underscores its significance in modern commerce and science. Companies that prioritize quality when they buy Phenolphthalein ensure the reliability and success of their own products and processes.