Daily washing water generally contains heavy metal ions (mainly Ca²⁺, Mg²⁺). In the washing process, they will form insoluble metal salts with the active substances in soap or detergent, reducing the washing capacity. Therefore, it is necessary to add industrial grade sodium tripolyphosphate, which can complex heavy metal ions, into the detergent.

Industrial grade sodium tripolyphosphate produced by Chongqing Chuandong Chemical Group has strong chelating effect on heavy metal ions, which can be sealed to eliminate its adverse effect on washing. In addition, it can also capture various metal components contained in the dirt and play a role in dissociating the dirt in the washing process.

Sodium tripolyphosphate produced by Chongqing Chuandong Chemical can expand and solubilize the protein in the dirt, and has the effect of degumming; It can promote the emulsification of fat; It can disperse solid dirt.

The industrial grade sodium tripolyphosphate produced by Chongqing Chuandong Chemical can keep the detergent dry and granular and prevent caking due to water absorption. In addition, the sodium tripolyphosphate produced by Chongqing Chuandong Chemical also has an alkaline buffer effect, which is conducive to the removal of acid dirt.