Description
Specifications Table
Product Name – Potassium nitrate, 99.999%, (trace metal basis)
Quantity/Pack Size – 10GR, 50GR, 250GR
Form – Crystalline powder
Grade – 99.999% (trace metal basis)
Application – Analytical chemistry, high-purity synthesis
Product Overview
Potassium nitrate (KNO₃) at 99.999% purity (trace metal basis) is a high-grade reagent designed for applications requiring ultra-low metal contamination. This crystalline powder undergoes rigorous purification to eliminate trace impurities, ensuring reliable results in sensitive analytical procedures. Its exceptional purity makes it ideal for use in advanced research, where even minor contaminants can compromise data integrity. The compound is chemically stable under standard lab conditions, with a melting point of 334°C and high solubility in water (316 g/L at 20°C). Unlike lower-grade alternatives, this variant guarantees minimal interference in spectroscopic, chromatographic, or electrochemical analyses. The trace metal basis specification confirms that residual metals (e.g., Fe, Cu, Pb) are controlled to parts-per-million levels, meeting the demands of high-precision workflows. Store in a tightly sealed container to prevent moisture absorption, as hygroscopicity may affect long-term stability.
FAQs
1. What is the difference between 99.999% and standard-grade potassium nitrate?
Standard-grade potassium nitrate typically contains higher levels of metallic impurities (e.g., iron, lead) and other contaminants, which can interfere with sensitive analyses. The 99.999% trace metal basis grade undergoes additional purification steps to reduce these impurities to ppm levels, ensuring accuracy in high-precision applications.
2. Can this potassium nitrate be used for pyrotechnics or fertilizers?
While chemically identical to lower-grade variants, this ultra-pure form is optimized for laboratory use and is not cost-effective for pyrotechnics or agricultural applications. Its high purity is unnecessary for such uses and may not comply with industry-specific regulations.
3. How should I handle this product to avoid contamination?
Use clean, dry tools (e.g., stainless steel or PTFE spatulas) and store in a dedicated, moisture-free container. Avoid glassware with metal components (e.g., aluminum caps) to prevent leaching. Work in a laminar flow hood if trace metal analysis is critical.
4. Is this product compatible with HPLC or ICP-MS analysis?
Yes, the ultra-low metal content makes it suitable for HPLC mobile phases or ICP-MS sample preparation, where metal impurities could skew results. However, always verify compatibility with your specific instrument and method requirements.
5. What is the shelf life under ideal storage conditions?
When stored in an airtight container at room temperature (15–25°C) and protected from humidity, the product remains stable for at least 3 years. Re-test for purity if used beyond this period or if exposed to unfavorable conditions.
