CAS · 87-66-1
Product Overview
Pyrogallol is a high-purity pharmaceutical-intermediates supplied for industrial and specialty chemical applications. Contact our team for specifications, packaging options and lead times.
Product Specifications
| Grade | AR |
|---|---|
| Appearance | White crystalline powder |
| Content | 99.5% min |
| Water | 0.50% max |
| Melting point | 131–136 °C |
| Solubility in water | The aqueous solution is colorless and transparent |
| Residue on ignition | 0.025% max |
| Chlorides | 0.001% max |
| Sulfates | 0.01% max |
| Gallic acid | No turbidity |
| Heavy metals (as Pb) | 100 ppb max |
Applications
Pyrogallol is a trihydroxybenzene derivative widely used in organic synthesis, analytical chemistry, and industrial applications. It serves as a reducing agent in photographic development, particularly in black-and-white photography, due to its ability to reduce silver ions to metallic silver. In organic synthesis, pyrogallol is employed as a building block for the preparation of dyes, pharmaceuticals, antioxidants, and polyphenolic compounds. It is also used in analytical chemistry for detecting oxygen, as a scavenger of dissolved oxygen, and in various redox reactions. Additionally, pyrogallol finds applications in polymer stabilization, electroplating, and as a component in hair dye formulations due to its phenolic reactivity.
Benefits
Pyrogallol offers several advantages due to its strong reducing properties, phenolic functionality, and chemical versatility. Its three hydroxyl groups enable efficient electron donation, making it a highly effective reducing and antioxidant agent. The compound is relatively stable under controlled conditions and soluble in common organic solvents, allowing convenient handling and incorporation into chemical reactions. Pyrogallol's reactivity supports selective functionalization and multi-step synthesis, while its ability to scavenge oxygen enhances its utility in sensitive industrial and analytical processes. These features make it a reliable and versatile reagent in both laboratory and industrial applications.
Conclusion
Pyrogallol is a highly functional polyphenolic compound with broad applications in organic synthesis, photography, analytical chemistry, and industrial processes. Its benefits, including strong reducing power, antioxidant activity, and chemical versatility, make it an essential reagent for synthesis, redox reactions, and oxygen-sensitive applications. The compound continues to support advancements in chemical research, material production, and industrial formulations.
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