CAS · 596-27-0
Product Overview
o-Cresolphthalein is a high-purity analytical-reagents supplied for industrial and specialty chemical applications. Contact our team for specifications, packaging options and lead times.
Product Specifications
| Grade | IND grade |
|---|---|
| Appearance | Off-white to slant yellow to light brown powder |
| pH Colour Change Range | 8.2 (Colourless) to 9.8 (Red) |
| Solubility in Ethanol Passes Test | Pass |
Applications
o-Cresolphthalein is widely used as a pH indicator, analytical reagent, and chemical intermediate in research and industrial applications. In analytical chemistry, it is employed to determine calcium concentrations in clinical samples, water, and food products due to its ability to form colored complexes with calcium ions. The compound is also applied in acid–base titrations as a colorimetric pH indicator, providing clear visual changes within specific pH ranges. Additionally, o-Cresolphthalein serves as a building block in the synthesis of dyes, pigments, and polymeric materials, as well as in research involving sensor development and chromogenic assays.
Benefits
The compound offers several advantages due to its chemical structure and multifunctional properties. Its phenolic and phthalide groups provide strong complexation with metal ions, enabling sensitive and selective calcium detection. The indicator properties of o-Cresolphthalein allow for rapid and easy visual assessment of pH changes or ion concentration, enhancing efficiency in laboratory and quality control settings. It is chemically stable under normal storage conditions and compatible with common solvents, ensuring reproducible results. Furthermore, its ability to be derivatized and incorporated into polymers or dyes allows for flexibility in material science and analytical applications.
Conclusion
o-Cresolphthalein is a versatile chemical used in analytical chemistry, sensor development, and materials synthesis. Its applications in calcium detection, pH indication, and as a synthetic intermediate, combined with benefits such as sensitivity, stability, and versatility, make it a valuable compound in laboratory, clinical, and industrial contexts. The compound continues to support precise analytical methods and innovative chemical research.
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