پتاسیم کرومات

Potassium chromate is a yellow, crystalline inorganic compound that is commonly used as an analytical reagent, oxidizing agent, and in industrial processes such as dyeing and metal treatment. It contains hexavalent chromium and is known for its strong oxidizing properties and toxicity.

🏭⚗️ Production
Potassium chromate is typically produced by treating chromium ore (chromite) with potassium carbonate in the presence of air or an oxidizing agent at high temperatures. The resulting mixture is leached with water and filtered to yield potassium chromate after crystallization.

🔬 Properties
Potassium chromate has the chemical formula K₂CrO₄ and a molar mass of approximately 194.19 g/mol. It appears as bright yellow monoclinic crystals that are highly soluble in water, forming a strongly alkaline solution. It acts as a powerful oxidizer and is stable under normal storage conditions but can decompose under high heat or in the presence of reducing agents.

🧪 Applications
Potassium chromate is used in analytical chemistry for detecting chloride ions through precipitation reactions. It is also employed in the manufacture of pigments, dyes, and inks, as well as in metal passivation, corrosion inhibition, and electroplating. In laboratories, it serves as a standard reagent in redox titrations and other analytical techniques.

⚠️ Safety
Potassium chromate is highly toxic, carcinogenic, and environmentally hazardous due to its hexavalent chromium content. It can cause severe irritation to the skin, eyes, and respiratory system, and long-term exposure may lead to organ damage or cancer. It must be handled with appropriate protective equipment and should be stored in tightly sealed containers away from combustible or reducing materials. Proper disposal protocols must be followed in accordance with hazardous waste regulations.