Sodium Phosphate Dibasic Dihydrate, chemically known as Disodium Hydrogen Phosphate Dihydrate, is a highly versatile inorganic compound with the CAS number 10028-24-7. Recognized for its broad utility, this white crystalline powder plays a crucial role across numerous industries, from sophisticated laboratory research to fundamental food processing and essential industrial applications. Its unique chemical properties make it an indispensable component in many formulations and processes.

The molecular formula of Sodium Phosphate Dibasic Dihydrate is Na2HPO4·2H2O, and it possesses a molecular weight of 177.99 g/mol. A key characteristic of this compound is its excellent solubility in water, making it highly effective in aqueous solutions. It exhibits a moderately basic pH in solution, typically ranging from 8.8 to 9.4 for a 1% or 5% solution, showcasing its notable buffering capacity. This ability to resist changes in pH is one of its most valuable attributes, particularly in applications requiring precise environmental control. Reputable manufacturers ensure high purity levels, often exceeding 98.0%, making it suitable for reagent, pharmaceutical, and food-grade applications.

The applications of Sodium Phosphate Dibasic Dihydrate are extensive and diverse. In the food industry, it serves multiple functions. It is commonly used as a pH adjusting agent, helping to maintain desired acidity levels in various food products. Its anti-caking properties prevent powdered goods from clumping, ensuring product quality and shelf life. Furthermore, it acts as a thickening agent in desserts and puddings, and prevents coagulation in the production of condensed milk, contributing to smoother textures and improved stability. As a food additive, it is identified by the E number E339(ii).

Beyond food, its utility extends significantly into the pharmaceutical and biomedical fields. Sodium Phosphate Dibasic Dihydrate is a fundamental component in the preparation of biological buffers, crucial for maintaining stable pH environments in molecular biology, biochemistry, and chromatography. It is often used in conjunction with monosodium phosphate to create buffer systems. Its applications include the purification of antibodies, the formulation of saline laxatives for medical procedures, and as a culture agent for the production of substances like monosodium glutamate and erythromycin. Research also highlights its role in areas such as biosensor development, bone regeneration studies, and drug transport mechanisms, underscoring its importance in advanced scientific endeavors.

In industrial sectors, Sodium Phosphate Dibasic Dihydrate is equally vital. It functions as a boiler water softener, effectively preventing the buildup of mineral scale which can impede efficiency and cause damage. It also acts as a weight-increasing agent in leather tanning and a flame retardant for wood and paper products, enhancing safety and material properties. Moreover, it serves as a mordant in dyeing processes and as a stabilizer for hydrogen peroxide bleaching in the printing and dyeing industry, ensuring consistent and high-quality results.

For businesses and researchers seeking this essential chemical, sourcing from a reliable manufacturer is paramount. A reputable supplier will offer Sodium Phosphate Dibasic Dihydrate with guaranteed purity and consistent quality, ensuring it meets the stringent requirements of various applications. When looking to buy or purchase this compound, it is advisable to consider suppliers who provide detailed specifications, Certificates of Analysis (CoA), and appropriate packaging options, typically available in 25kg bags or smaller laboratory quantities.

Understanding the market price and availability is crucial for efficient procurement. Leading chemical suppliers often provide competitive pricing and efficient logistics for global distribution. Ensuring a steady supply of high-purity Sodium Phosphate Dibasic Dihydrate from a trusted source is key to the success and integrity of processes in food, pharmaceutical, and industrial manufacturing, as well as in critical scientific research.