In the precise world of analytical chemistry, accuracy is paramount. Titration, a fundamental quantitative analytical technique, relies heavily on the use of well-defined primary standards to ensure the reliability of results. Sodium Oxalate (CAS 62-76-0) stands as an exemplary primary standard, particularly in redox titrations, most notably for the standardization of potassium permanganate (KMnO4) solutions. For laboratories and researchers who demand precision in their measurements, understanding and utilizing Sodium Oxalate correctly is essential.

Sodium Oxalate, a white crystalline powder with the molecular formula C2Na2O4 and CAS number 62-76-0, is an ideal primary standard due to several key characteristics. Firstly, it is readily available in high purity, often exceeding 99.5%. Secondly, it is non-hygroscopic, meaning it does not readily absorb moisture from the air, allowing for accurate weighing. Thirdly, it is stable under normal storage conditions, and when heated appropriately, it decomposes cleanly. Its molar mass (134.00 g/mol) is also convenient for stoichiometric calculations.

The primary application of Sodium Oxalate in analytical chemistry is its use as a reducing agent in the standardization of oxidizing agents like potassium permanganate. The reaction proceeds as follows: 5C2O4^2- + 2MnO4^- + 16H^+ → 10CO2 + 2Mn^2+ + 8H2O. This reaction is typically carried out in an acidic medium, often with sulfuric acid, and requires careful heating to initiate and maintain the reaction rate. The distinct color change of the permanganate ion serves as the endpoint indicator. By accurately weighing a known amount of Sodium Oxalate and titrating it with the permanganate solution, the exact concentration of the permanganate solution can be precisely determined.

Beyond its role in KMnO4 standardization, Sodium Oxalate also serves as a chelating agent and is used in the determination of other metal ions, as well as in certain gravimetric analyses. Its ability to precipitate calcium ions makes it useful in biochemical studies and clinical diagnostics. For professionals who need to buy Sodium Oxalate for their laboratory work, sourcing from a reputable manufacturer is critical to ensure the required purity and consistency. As a leading supplier of Sodium Oxalate in China, we are dedicated to providing analytical laboratories with the high-quality reagent they need. We understand the importance of reliable analytical standards and offer competitive pricing to support your research and quality control processes. Ensure the accuracy of your titrations by choosing our high-purity Sodium Oxalate.