Water is an indispensable resource in production. If the water hardness is too high in printing and dyeing production, the addition of disperse dyes into the dyeing bath will produce secondary condensation. In order to prevent this situation, sodium hexametaphosphate is often used to regulate the softness and hardness of water in printing and dyeing, and to ensure the quality of water used for printing and dyeing so that the printing and dyeing process can proceed smoothly.

For dyeing, it can be understood as: ensuring the quality of water, avoiding the reaction of calcium and magnesium ions in hard water with dyes and affecting the quality of dyeing products. For calcium, magnesium ions in water.

Sodium hexametaphosphate can form stable soluble complexes with calcium and magnesium salts in water to achieve the purpose of soft water.The PH value of sodium hexametaphosphate is medium. The advantages are that it is soluble with calcium salt and magnesium salt produced by hard water and will not deposit on fibers. Moreover, it can recapture calcium ion and magnesium ion from the precipitation of insoluble calcium dye and magnesium dye produced by the process and resolve the precipitation so as to improve the quality of dyeing 

products.

Therefore, sodium hexametaphosphate is an ideal water softener, which can soften water, effectively remove excess soluble hard metals in water, have strong chelating power for heavy metal ions, and have good decomposition ability for insoluble soaping. It can effectively prevent insoluble matter from depositing on fibers. Normal dosage 1.0-3.0 g/L.Click here for Sodium Hexametaphosphate.