Sodium tripolyphosphate (STPP) is mainly used as the auxiliary of synthetic detergent in industry. It is an excellent auxiliary of detergent. It not only strengthens the decontamination ability of detergent and cleans our living environment, but also can be used in mining, petroleum, papermaking, metallurgy and water treatment.

Its main functions are as follows:

1. It can chelate hard metal ion: In the washing water that is usually used, hard metal ions are included , and they will react with the active substances in the detergent to form metal salts. This not only increases the use of detergent, but also darkens the color of the washed items. This property of sodium tripolyphosphate can reduce the adverse effects of metal salts.

2. Gelatinization, emulsification and dispersion: sodium tripolyphosphate has gelatinization effect on protein in secretion, emulsification effect on reducing fat substances, and dispersion and suspension effect on sand, dust and other solid particles outside.

3. It has great alkaline buffering effect: as the auxiliary of synthetic detergent, sodium tripolyphosphate can keep the pH value of detergent at about 8.4, which can clean up acidic dirt.

4. Keep dry: in the environment of high humidity, powdery synthetic detergent is easy to appear block by block, which brings inconvenience in the process of use. Sodium tripolyphosphate can form a dry flowing water compound after absorbing water, which can reduce the blocking phenomenon, so as to keep the dry of powdery synthetic detergent.

Production process of Sodium Tripolyphosphate (STPP)

Sodium tripolyphosphate (STPP) is formed by neutralization of phosphoric acid with soda ash and condensation.

There are 2 ways to produce phosphoric acid: wet method and hot method.

Wet process is the reaction of phosphate rock with inorganic acid (sulfuric acid is usually used, acid salt has been used recently), then phosphoric acid is obtained by extraction and purification.

In the thermal method, phosphate rock is roasted together with coke and silica in an electric furnace. Phosphate rock is reduced to phosphorus, and then oxidized, hydrated to obtain phosphoric acid.

Click here to check Sodium Tripolyphosphate (STPP) and other phosphate products

1. Phosphoric Acid

2. Ammonium Phosphates

3. Potassium Phosphates

4. Sodium Phosphates

5. Calcium Phosphates

6. Urea Phosphate

OKCHEM Distribution Project for Phosphoric Acid and Phosphates

If you want to join us to be the distributor of Chinese factories for Phosphoric Acid and Phosphates, please contact us at info@okchem.com. You may also make the application online at: https://www.okchem.com/agent/detail/h3po4

Below for your information are our factories of Phosphoric Acid and Phosphates. 

FISINO: FISINO has efficient team with 20 years’ experience in Phosphates industry, and we supply our clients with stable quality and diversified products for various applications.

SICHUAN OLLIANCE TECHNOLOGY CO.,LTD: The main products are mono ammonium phosphate (MAP), di-ammonium phosphate (DAP), NP/NPK compound fertilizers and soluble fertilizers, mono-potassium phosphate (MKP), urea phosphate (UP), potassium nitrate (NOP) and potassium sulphate (SOP).

SHIFANG QISHAN CHEMICAL CO. , LTD: The company mainly produces phosphate series of food additives, food-grade phosphate products are: food grade phosphoric acid, ammonium dihydrogen phosphate, diammonium phosphate, potassium dihydrogen phosphate, dipotassium hydrogen phosphate, sodium dihydrogen phosphate, Sodium, trisodium phosphate and so on.

Shifang Zhixin Chemical: the company is founded in 2008, is located in Shifang of Sichuan Province which is one of four famous phosphorous zones in China. Zhixin Chemical is a technology-based company and attaches great importance to technological innovation. Our products in line with ISO9001, HACCP, KOSHER, HALAL Certification standard.