Mechanical oil used in metal processing. If oil stains adhere to the surface of metal parts, they will affect the coating and assembly of subsequent parts, and the oil stains on the parts will cause the entire production environment to be unable to maintain cleanliness. Therefore, the surface dirt in each process needs to be promptly cleaned with industrial cleaning agents, and sodium tripolyphosphate is one of the auxiliary industrial cleaning agents.

Sodium tripolyphosphate, also known as pentasodium phosphate, is a white powder or granular solid. Soluble in water, capable of complexing alkali metals with metal salts, capable of softening water, adjusting and buffering the PH value of the saponification value, with a PH of 9.7 for 1% solution, and having ion exchange capacity.

Emulsification, dispersion and solubilization properties of sodium tripolyphosphate

Sodium tripolyphosphate has characteristics of dispersion, emulsification, and gelation for fine dust particles and oil droplets. It can enhance the suspension ability of dirt in solution and play a role in preventing redeposition. Using the hydrophilic and lipophilic groups in the molecular structure of surfactants to adsorb on the interface between oil and solution, the hydrophilic groups point to the solution and the lipophilic groups point to the oil, arranged in a directional manner, which greatly reduces the interfacial tension between oil and liquid.

Sodium tripolyphosphate can also be used as a surface active agent and a cleaning aid. Through emulsification and dispersion, oil droplets cannot merge with each other and re adhere to the surface of the workpiece. Under stirring, oil stains become loose and easily dispersed into extremely fine oil droplets that are separated from the surface of the workpiece, achieving significant cleaning effects.

Moreover, sodium tripolyphosphate nonionic surfactants do not exist in an ionic state in the solution, so they have high stability and are not susceptible to the presence of strong electrolytes, as well as acids and bases. They can be mixed with other types of surfactants, have good compatibility, have good solubility in various solvents, and do not undergo strong adsorption on solid surfaces, which can ensure the cleanliness of the production process, It also ensures that the parts are clean in every processing step.

In daily life, everyone uses cleaning agents to remove oil, stains, and dirt, such as soap, hand sanitizer, and toilet soap. Cleaning agents have become an indispensable part of our daily life. Sodium tripolyphosphate has been widely used as a cleaning aid, especially in industrial production.