Description
Specifications Table
Product Name – Sodium carbonate, 99.999%, (trace metal basis)
Quantity/Pack Size – 5GR, 25GR
Form – White crystalline powder
Grade – ACS, 99.999% (trace metal basis)
Application – pH adjustment, buffer preparation, analytical chemistry
Product Overview
This ultra-high-purity sodium carbonate (99.999% trace metal basis) is meticulously refined to eliminate trace metallic contaminants, making it indispensable for applications demanding exceptional purity. The ACS-grade certification guarantees compliance with stringent analytical standards, ensuring reliable results in critical laboratory procedures. Its white crystalline powder form offers excellent solubility in water, facilitating precise concentration control for buffer solutions, titrations, and pH adjustments. The product’s low moisture content (<0.1%) and negligible chloride/sulfate impurities prevent interference in sensitive reactions. Packaged in airtight containers to maintain integrity, this sodium carbonate maintains stability under standard lab conditions (20-25°C). Its neutral pH (8.5-9.5 in 5% solution) and high assay consistency (±0.001%) make it particularly valuable for quantitative analyses where reagent purity directly impacts data accuracy. The trace metal basis specification confirms maximum impurity levels of <1 ppm for heavy metals, ensuring minimal spectroscopic or electrochemical interference.
FAQs
1. What is the difference between 99.999% trace metal basis and standard ACS-grade sodium carbonate?
The 99.999% trace metal basis version undergoes additional purification to reduce metallic impurities to <1 ppm, while standard ACS grade typically allows up to 5 ppm heavy metals. This makes it superior for ICP-MS, AAS, and other trace analysis techniques.
2. Can this sodium carbonate be used for preparing primary standard solutions?
Yes, its high assay accuracy (±0.001%) and ultra-low moisture content qualify it for primary standard preparation, though it’s recommended to dry it at 110°C for 2 hours before use for maximum precision.
3. How should I store this product to maintain its purity?
Store in the original airtight container at 15-30°C, protected from humidity. Use desiccant packs if opening frequently, as the hygroscopic nature may affect weight accuracy over time.
4. Is this product compatible with glassware for long-term storage?
While chemically compatible, prolonged contact with soda-lime glass may leach trace alkali metals. For storage beyond 6 months, use borosilicate glass or HDPE containers to preserve purity.
5. What alternatives exist for applications requiring lower sodium content?
Potassium carbonate (99.995%) offers similar buffering capacity with lower sodium interference, though its solubility profile differs slightly (112g/100mL vs 22g/100mL for sodium carbonate at 20°C).
