رنگ پونسو 4R

Ponceau 4R is a synthetic azo dye widely used in pharmaceuticals, cosmetics, and food products to impart red coloration. It is water-soluble and known for its bright red hue, stability in aqueous solutions, and compatibility with various excipients.

🏭⚗️ Production
Ponceau 4R is manufactured by diazotization and coupling reactions of aromatic amines under controlled conditions to form the azo compound. The dye is purified through crystallization, filtration, and drying processes to achieve a high-purity, water-soluble powder suitable for pharmaceutical and food applications.

🔬 Properties
Ponceau 4R appears as a red crystalline powder or granular material. It is highly soluble in water, slightly soluble in alcohol, and practically insoluble in organic non-polar solvents. It is stable under light and moderate heat but can degrade in strong acidic or alkaline conditions. The dye exhibits strong color intensity even at low concentrations and does not significantly alter pH in aqueous formulations.

🧪 Applications
In pharmaceuticals, Ponceau 4R is used to color tablets, capsules, syrups, and topical formulations. In food products, it serves as a coloring agent in candies, beverages, and desserts. In cosmetics, it is employed in lipsticks, blushes, and other personal care products. Its water solubility and bright color make it suitable for coatings, suspensions, and oral solutions.

⚠️ Safety
Ponceau 4R is approved for use in many countries but may cause hypersensitivity reactions in rare cases, particularly in individuals with aspirin intolerance. It should be stored in a cool, dry place away from light and moisture to maintain stability. Handling of the powdered dye requires care to avoid inhalation or ingestion, and personal protective equipment such as gloves and masks is recommended in industrial or laboratory settings.