Disodium Hydrogen Phosphate Dodecahydrate

Disodium Hydrogen Phosphate Dodecahydrate, with the chemical formula Na₂HPO₄・12H₂O, is a common crystalline hydrate of Disodium Hydrogen Phosphate, which has a number of specific applications in industry due to its unique properties.

In the water treatment industry, it is an efficient water softener and scale inhibitor. In industrial circulating cooling water system, calcium and magnesium ions in water are easy to form scale, which affects the heat dissipation efficiency of the equipment.Disodium Hydrogen Phosphate Dodecahydrate dissolves in water and dissociates the hydrogen phosphate ions, which can combine with the calcium and magnesium ions to form a stable and soluble complex, preventing them from generating precipitation. In the circulating water system of an iron and steel plant, after adding Disodium Hydrogen Phosphate Dodecahydrate with a concentration of 5-8mg/L, the amount of scale generated on the surface of the heat exchanger has been reduced by more than 60%, and the maintenance cycle of the equipment has been extended by 3 times. In boiler water treatment, it can reduce the hardness of water and prevent the boiler wall from scaling, adding 10-15g per ton of boiler water can increase the thermal efficiency of boiler by 5%-8%.

Disodium Hydrogen Phosphate Dodecahydrate is effective as a water softener in the dyeing and printing industry. Calcium and magnesium ions in hard water will combine with the dye and affect the uniformity of dyeing. In the process of cotton dyeing, adding 0.2%-0.3% of Disodium Hydrogen Phosphate Dodecahydrate to the dye bath can chelate the metal ions in hard water, making it easier for the dyes to adhere to the fibers. After the use of a printing and dyeing factory, the rate of dyeing defects was reduced from 8% to 2%, the vividness of fabric color was improved obviously, and the washing resistance was enhanced. At the same time, it can also adjust the pH value of the dye bath between 8-9, providing a suitable environment for dye dissolution and dyeing.

Disodium Hydrogen Phosphate Dodecahydrate is an excellent flux and glaze additive in the ceramic industry. In the production of ceramic billets, adding 2% -3% of Disodium Hydrogen Phosphate Dodecahydrate, can reduce the firing temperature of the billet about 50-80 ℃, shorten the firing time. The practice of a ceramic factory showed that the use of energy consumption decreased by 12%, and the density of the body to improve the fracture strength increased by 15%. Add 1%-2% in the glaze, can improve the fluidity of the glaze, make the glaze more smooth and flat, reduce the pinholes, shrinkage of the glaze and other defects, enhance the appearance of ceramic products quality.

It is also indispensable for metal processing industry. In the phosphating process of metal surface treatment, Disodium Hydrogen Phosphate Dodecahydrate, as one of the components of the phosphating solution, can adjust the pH value of the phosphating solution at 5.5-6.5, to promote the formation of uniform and dense phosphate film on the metal surface. This phosphating film can enhance the corrosion resistance of the metal, an automotive parts factory using this process, parts of the salt spray test corrosion resistance time from 48 hours to 96 hours. In addition, adding 0.5%-1% in metal cutting fluid can play a role in preventing rust and stabilizing the pH value of the cutting fluid, extending the service life of the cutting fluid.

Disodium Hydrogen Phosphate Dodecahydrate has a wide range of specific applications in the industrial field, providing strong support for the efficient operation of various industrial processes and product quality enhancement, and is an indispensable chemical additive in industrial production.

disodium hydrogen phosphate dodecahydrate synonyms

disodium hydrogen phosphate dihydrate synonyms

disodium hydrogen phosphate hazards

disodium hydrogen phosphate dodecahydrate formula

disodium hydrogen phosphate dihydrate formula

disodium hydrogen phosphate dodecahydrate merck

disodium hydrogen phosphate melting point

disodium hydrogen orthophosphate molecular