Ethylenediamine Tetraacetic Acid Disodium Salt, often abbreviated as Disodium EDTA, is a chemical compound that has carved out an indispensable niche across numerous industries due to its unique scientific properties. Understanding the science behind its effectiveness, from its molecular structure to its production methods, is key for any professional looking to buy or utilize this powerful chelating agent. As a dedicated manufacturer, we pride ourselves on producing Disodium EDTA that adheres to the highest scientific standards.

At its core, Disodium EDTA (CAS 4813-57-4 is a salt of Ethylenediaminetetraacetic acid (EDTA). EDTA itself is an aminopolycarboxylic acid, and when it forms a salt with sodium, it becomes a highly effective chelating agent. The 'disodium' designation indicates that two hydrogen atoms in the carboxylic acid groups have been replaced by sodium ions. The chemical formula, C10H14N2Na2O8, reveals a structure where the nitrogen atoms and the oxygen atoms from the carboxylate groups coordinate with a central metal ion, forming a stable, cage-like complex. This specific arrangement allows it to bind strongly to a wide range of divalent and trivalent metal cations, such as Ca2+, Mg2+, Fe3+, and Cu2+.

The physical properties of Disodium EDTA are also critical to its utility. It typically presents as a white crystalline powder, odorless, and with a slightly acidic taste. Its solubility in water is excellent, forming clear, colorless solutions, which is vital for applications in liquids and aqueous formulations. While it can exist in anhydrous form, it often exists as a dihydrate, losing water of crystallization when heated significantly. This consistent physical form makes it easy to handle and incorporate into various processes.

The production of Disodium EDTA involves a sophisticated chemical synthesis. A common manufacturing route involves reacting ethylenediamine with sodium cyanide and formaldehyde in a series of controlled steps, often under vacuum and elevated temperatures. This process requires precise control over reactant ratios, reaction times, and temperatures to maximize yield and purity while minimizing by-products. The resulting crude product is then further processed, often through crystallization and filtration, to isolate the pure Disodium EDTA. For example, reacting edetic acid with sodium hydroxide is another pathway to produce the salt. We employ advanced manufacturing techniques to ensure that the Disodium EDTA we supply meets exact specifications.

The stability of Disodium EDTA in solution is another key scientific attribute. While aqueous solutions can be sterilized by autoclaving, it's important to store them in alkali-free containers. The compound's hygroscopic nature means it should be stored in well-closed containers in cool, dry conditions to prevent moisture absorption. It is also incompatible with strong oxidizing agents, strong bases, and certain metal ions or alloys, which is important information for formulators and chemists.

Understanding these scientific underpinnings—its molecular structure, chelating mechanism, physical properties, and production intricacies—is essential for leveraging Disodium EDTA effectively. As a manufacturer committed to scientific excellence, we provide not just a product, but a solution backed by deep chemical expertise. If you are looking to buy Disodium EDTA, inquire about our manufacturing process and quality assurance to ensure you are sourcing from a scientifically sound and reliable supplier.