Detergent is a spare part in daily life and work. It plays an important role in healthy and clean environment and industrial production. The formation of all kinds of dirt is different. Clean water is not clear. Detergent is used widely. However, detergent detergency is also formulated according to a certain formula. The manufacturer of sodium tripolyphosphate in China tells you it is an indispensable good adjuvant in detergent. The content of most detergents is 10-50%.

Its main functions can be summarized as follows.

1. Sodium tripolyphosphate/STPP mainly chelates metal ions in detergents. In daily washing water, it usually contains hard metal ions (mainly Ca²⁺, Mg²⁺). In the washing process, various metal ions form insoluble metal salts with the active substances in soap or detergent, which not only increases the consumption of detergent, but also makes the washed fabric have unpleasant dark grey. Sodium tripolyphosphate has excellent properties of chelating hard metal ions, thus eliminating the adverse effects of these metal ions.

2. Sodium tripolyphosphate can also improve the role of sol, emulsification and dispersion: dirt often contains human secretions (mainly proteins and lipids), but also contains sand and dust from the outside world. Sodium tripolyphosphate has the effects of swelling and solubilizing proteins, promoting emulsification of lipids and dispersing suspension of solid particles.

3. Buffering effect: Sodium tripolyphosphate has great alkaline buffering effect, keeping the PH value of washing solution at about 9.4, which is beneficial to the removal of acid fouling.

4. The function of preventing caking: Powdery synthetic detergent has hygroscopicity. If it is stored in a place with high humidity, caking will occur. The use of agglomerated detergents is extremely inconvenient. The hexahydrate formed by sodium tripolyphosphate absorbed water has the characteristics of dryness. When there is a large amount of sodium tripolyphosphate in the detergent formulation, it can prevent the caking phenomenon caused by moisture absorption and keep the dry and cool granularity of synthetic detergent.

So sodium tripolyphosphate is mainly used in detergent auxiliaries as an auxiliaries for synthetic detergents, soap synergists and preventing the precipitation and frosting of soap grease. It has strong emulsifying effect on lubricating oil and fat, and can be used to adjust the PH value of buffer soap.

Chongqing Chuandong Chemical Group in China has different levels of sodium tripolyphosphate for different purposes.