Ammonium Zirconium Carbonate
Overview
Ammonium Zirconium Carbonate (AZC) is a water-soluble zirconium compound widely used in industrial applications. It serves as a crosslinking agent, binder, or precursor in coatings, textiles, and ceramics due to its high zirconium content and stability. Industrial-grade AZC is favored for its cost-effectiveness and performance in demanding environments. The compound is typically supplied as a clear liquid, though concentrations and additives may vary by manufacturer. Its versatility makes it a staple in sectors requiring durable, heat-resistant materials. Buyers should prioritize suppliers with strict quality control to ensure consistent performance.
Physical and Chemical Properties
AZC is characterized by its alkaline pH (typically 9–11) and high solubility in water. The molecular formula (NH4)3Zr(OH)(CO3)3 reflects its ammonium and carbonate groups, which contribute to its reactivity in crosslinking reactions. It decomposes upon heating, releasing ammonia and forming zirconium dioxide. Density ranges around 1.3 g/cm³, and the solution is stable under proper storage conditions. However, prolonged exposure to air may lead to carbon dioxide loss, altering its properties. Testing for zirconium content (usually 18–22% ZrO2) is critical for quality assurance.
Main Applications
In coatings, AZC acts as a binder for waterborne systems, enhancing adhesion and corrosion resistance. Textile manufacturers use it as a flame retardant and for wrinkle-resistant finishes. The paper industry employs AZC to improve wet-strength properties. Ceramics and catalysts benefit from its zirconium content, which aids in forming stable, high-temperature structures. Its role in wastewater treatment (e.g., phosphate removal) is also gaining traction. Buyers should match purity grades (industrial vs. high-purity) to their specific use case.
Safety and Storage
AZC is non-flammable but requires careful handling due to its alkaline nature. Skin or eye contact can cause irritation, necessitating gloves and goggles. Spills should be neutralized with dilute acid and rinsed with water. Storage in HDPE or stainless-steel containers is recommended to prevent contamination. Avoid freezing or prolonged exposure to temperatures above 40°C, which may destabilize the solution. Shelf life is typically 6–12 months under optimal conditions.
B2B Procurement Guide
When sourcing AZC, verify the zirconium oxide (ZrO2) content and pH levels, as these directly impact performance. Request technical datasheets and batch-specific certificates of analysis. Bulk purchases (e.g., IBC totes) often reduce costs but require proof of compatible storage facilities. Reliable suppliers should adhere to ISO or equivalent standards. Sample testing is advised for new vendors. Consider logistics: AZC’s liquid form may incur higher shipping costs compared to powders.
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