معرف مایر

Mayer’s Reagent is a chemical reagent widely used for the detection of alkaloids through precipitation reactions in phytochemical analysis.

🏭⚗️ Production
Mayer’s reagent is prepared by dissolving mercuric chloride (HgCl₂) and potassium iodide (KI) in distilled water. The typical formulation involves dissolving mercuric chloride in water, then adding potassium iodide solution, forming a clear, pale yellow solution containing complex mercury-iodide ions.

🔬 Properties
Mayer’s reagent is a clear, pale yellow liquid. It reacts with alkaloids to form cream-colored precipitates, allowing qualitative detection of alkaloid presence in plant extracts and other samples. The reagent is sensitive and specific for alkaloids, making it a standard test in natural product chemistry.

🧪 Applications
Mayer’s reagent is commonly used in phytochemical screening to detect alkaloids in crude plant extracts and pharmaceutical preparations. The appearance of a cream-colored precipitate confirms the presence of alkaloid compounds. It is also used in forensic and quality control laboratories.

⚠️ Safety
Mayer’s reagent contains toxic mercury compounds and iodides. It is harmful if ingested or upon prolonged skin contact. Handle with gloves, eye protection, and work in a well-ventilated area. Dispose of mercury-containing waste according to hazardous waste regulations. Store in tightly sealed containers away from light and incompatible substances.