Description
Specifications Table
Product Name – Cesium chloride, UltraDry™, 99.998% (metals basis)
Quantity/Pack Size – 25g, 5g
Form – Crystalline powder
Grade – UltraDry™ (99.998% metals basis)
Application – Density gradient centrifugation, molecular biology, analytical chemistry
Product Overview
Cesium chloride, UltraDry™, with a minimum purity of 99.998% (metals basis) is a high-performance reagent designed for applications demanding ultra-low moisture and trace metal contamination. The UltraDry™ treatment ensures minimal hygroscopicity, making it ideal for long-term storage without compromising purity. This grade is processed under stringent conditions to eliminate residual metals, providing consistent results in density gradient centrifugation, where even trace impurities can affect separation efficiency. The crystalline powder form dissolves rapidly in aqueous solutions, offering clarity and stability for molecular biology protocols. Its high density (3.989 g/cm³) and solubility in water (186 g/100 mL at 20°C) further enhance its utility in creating precise density gradients. Unlike standard grades, this product undergoes rigorous quality control to guarantee batch-to-batch uniformity, reducing variability in experimental outcomes. The packaging in airtight, moisture-resistant containers preserves its integrity, ensuring the product remains free from environmental contaminants until use.
FAQs
1. What is the difference between UltraDry™ and standard cesium chloride?
UltraDry™ cesium chloride undergoes additional drying and purification steps to achieve 99.998% purity with ultra-low moisture content, whereas standard grades may contain higher residual water and trace metals, affecting performance in sensitive applications.
2. Can this product be used for DNA separation in density gradients?
Yes, the high purity and low trace metal content make it highly suitable for creating stable density gradients required for DNA, RNA, or protein separation during ultracentrifugation.
3. How should I store UltraDry™ cesium chloride to maintain its purity?
Store the unopened container in a cool, dry place (15–25°C) away from direct sunlight and moisture. Once opened, reseal tightly and use desiccants to prevent hygroscopicity.
4. Is this product compatible with organic solvents?
Cesium chloride is primarily soluble in water and polar solvents like ethanol (sparingly). For organic solvent-based applications, verify compatibility with your specific solvent system, as precipitation may occur.
5. What alternatives exist if I need a lower-purity cesium chloride?
For less demanding applications, standard ACS-grade cesium chloride (99.9% purity) is available, though it may contain higher moisture and trace metal levels, impacting gradient stability.
