The solubility of technical grade sodium hexametaphosphate/SHMP is related to temperature and pH

 Chemical formula of sodium hexametaphosphate/SHMP: Na6P6O18. It is a polar inorganic compound, soluble in water, with a relative density of 2.484 and a melting point of 616 ℃ (decomposition). The solubility in water is large, but slow.


Phosphorus oxide and its hydrate have relatively strong water absorption, and become sticky after moisture absorption, so it is easy to deliquesce in the air. In general, with the increase of temperature, the solubility will increase (with some exceptions, such as calcium hydroxide).


Therefore, the solubility of technical grade sodium hexametaphosphate/SHMP is greatly affected by temperature. At 20 ℃, its solubility is 963.2g, while at 80 ℃, its solubility is as high as 1744g / kg (equivalent to two kilograms of product dissolved in one kilogram of water). However, its dissolution rate is slow, its aqueous solution is acid, and it is easy to hydrolyze to orthophosphate in warm water or acid-base solution. The hydrolysis process is irreversible and the hydrolysis process is irreversible Temperature is related to temperature and pH value.


Technical grade sodium hexametaphosphate/SHMP has a certain process because it can be hydrolyzed to phosphite and orthophosphate when dissolved in water. It is precisely because of this process that it has better properties than other phosphates when used as softening water and dispersant.


The technical grade sodium hexametaphosphate/SHMP produced by Chongqing Chuandong chemical group takes the yellow phosphorus produced from the phosphate rock of our own fine phosphate mine as the raw material, and then the genuine thermal process phosphoric acid produced by the thermal process is used as the raw material, with uniform particles, less impurities, better flow rate and less consumption. It is widely used in water treatment, detergent auxiliaries, flotation agents, refractory materials, important addition of ceramics, efficient softener for cooling water treatment of boilers and fertilizer plants, etc.

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