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Industrial sodium dihydrogen phosphate, molecular formula: sodium dihydrogen phosphate NaH₂PO₄·2H₂O. Anhydrous sodium dihydrogen phosphate NaH₂PO₄ is widely used in the chemical industry, agricultural field, food industry, water treatment field, metal surface treatment, pharmaceutical industry, printing and dyeing industry, chemical reagents, etc.
Indicator: Implementation of HG/T2767-2009
Performance and application advantages
1. Appearance: White powder or granules, colorless to white crystals. Easy to dissolve in water, with a solubility of 85g/100ml in water, slightly soluble in ethanol but insoluble in ether. Has a certain degree of moisture absorption and is prone to clumping in humid air. Stable at room temperature and pressure, but undergoes decomposition reaction at high temperature. Dehydration to anhydrous substance occurs at 100 degrees Celsius, sodium pyrophosphate is generated at 190-210 degrees Celsius, and sodium metaphosphate is decomposed at 280-300 degrees Celsius. It is an acidic salt, and its aqueous solution is acidic. Has certain chemical reactivity and can react with various substances, such as reacting with alkali to produce phosphate and water; Reacts with metals to form precipitates or complexes. Sodium dihydrogen phosphate and disodium hydrogen phosphate can form a buffer system, which can stabilize the acidity and alkalinity of the solution to a certain extent, resist small changes in acidity and alkalinity, and play an important role in many industrial processes that control pH.
2. Main advantages: In the field of agriculture, it provides phosphorus elements for plants, promotes root development, flowering and fruiting, enhances disease resistance, improves soil structure, and enhances soil water and fertilizer retention capacity. In the food industry, such as in beverages, jams, and other products, it is used to regulate the acidity and acidity of food, and in baked goods such as bread and cakes, it makes the food loose and porous, stabilizes the pH value of the food, prevents changes in acidity and alkalinity from affecting the taste of the food, and extends the shelf life. In the chemical industry, it is used to prepare phosphate compounds such as potassium dihydrogen phosphate and sodium dihydrogen phosphate. In the electroplating industry, as a component of the electroplating solution, it can improve the quality of electroplating. In the washing industry, as a detergent aid, it enhances the cleaning ability of detergents. In the field of water treatment, it combines with phosphate ions in water to form a precipitate, reducing the phosphorus content of the water and preventing eutrophication. It can also combine with calcium and magnesium ions in water to form insoluble phosphate precipitates. In the pharmaceutical industry, buffer salts are used as drug formulations to maintain acid-base balance and can also be used as contrast agent components. In the printing and dyeing industry, it is used as a regulator in the low formaldehyde non ironing finishing process to reduce fabric loss and improve whiteness retention value. It can also be used as a chemical reagent, an additive in cement mortar, to delay cement setting, extend the service life of mortar, etc.
Use laminated plastic woven bags and lined plastic film bags, with a net weight of 25kg or 50kg per bag, or package according to customer requirements.
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