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Sodium iodide (NaI), identified by its CAS number 7681-82-5, is an inorganic salt that exhibits fascinating chemical properties and reactivity, making it a valuable compound in various scientific disciplines. As an ionic compound formed between sodium (Na+) and iodide (I-) ions, its behavior is largely dictated by these constituent ions.
Physically, sodium iodide typically appears as a white, crystalline powder or colorless cubic crystals. It is highly hygroscopic, meaning it readily absorbs moisture from the air, which can lead to clumping and a decrease in purity if not stored properly. This property necessitates storage in tightly sealed containers, away from moisture. Sodium iodide is notably soluble in water, with a solubility of approximately 1840 mg/ml at 25°C, and also shows good solubility in polar organic solvents like ethanol, glycerol, and acetone. This high solubility is a key factor in its utility in chemical reactions, ensuring effective interaction between reactants.
Chemically, the iodide ion (I-) is a potent nucleophile and a good leaving group. This characteristic underpins sodium iodide's significant role in organic synthesis, most notably in the Finkelstein reaction. In this reaction, sodium iodide facilitates the conversion of alkyl chlorides or bromides into alkyl iodides. The driving force for this transformation is the precipitation of the less soluble sodium chloride or bromide in solvents like acetone. The increased nucleophilicity of iodide compared to chloride or bromide also makes it an effective participant in SN2 reactions, enabling the synthesis of a wide range of organoiodine compounds.
Furthermore, sodium iodide can act as a catalyst or promoter in various chemical processes. Its ability to participate in redox reactions and influence reaction pathways makes it a versatile tool for chemists. The careful handling and application of sodium iodide, guided by its known chemical properties, are essential for achieving desired outcomes in synthesis, analysis, and industrial processes. The consistent quality of commercially available sodium iodide ensures that these chemical transformations can be performed reliably.
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1. 20 years of R&D, manufacturing and sales experience, serving customers in 60 countries and regions around the world;
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3. We can satisfy customers' perfect transition from small scale lab requirements (gram level) to commercialization requirements (hundred tons level).
A: We don't have Minimum Order Quantity, exact quantity should be provided before quotation for us to calculate the exact cost.
A: We don't provide free samples due to lots of request and expensive international courier's cost, we can deduct the sample charge after commercial order placed.
A: Our payment terms: Small or sample order: T/T IN ADVANCE. Commercial order: First order should be by T/T IN ADVANCE or L/C at sight, and following orders T/T 30~90days is acceptable subject to approval of credit application.
