Sodium tripolyphosphate is a kind of inorganic compound, white crystalline powder, soluble in water, alkaline solution, is an amorphous water-soluble linear polyphosphate. Sodium tripolyphosphate has the functions of chelating, suspending, dispersing, gelatinizing, emulsifying, pH buffering, etc. It can be used as the main additives of synthetic detergent, industrial water softener, leather pretanning agent, dyeing agent, organic synthesis catalyst, food additive, etc. So, what are the common uses of industrial and edible sodium tripolyphosphate?
Common uses of sodium tripolyphosphate:
1. Mainly used as an auxiliary for synthetic detergent, for soap synergists and to prevent the precipitation and frosting of bar soap grease. It has a strong emulsification effect on lubricating oil and fat, and can be used to adjust the PH value of buffer soap liquid.
Sodium tripolyphosphate is an indispensable and excellent auxiliary agent in detergent, and its main functions can be summarized as follows.
① Chelation of metal ions
Daily washing water generally contains hard metal ions (mainly Ca2+, Mg2+). During the washing process, they will form an insoluble metal salt with the active substance in the soap or detergent, so that not only the consumption of detergent increases, but also the fabric after washing has an unpleasant dark gray. Sodium tripolyphosphate has excellent properties of chelating hard metal ions, which can eliminate the adverse effects of these metal ions.
② Improve the role of gel dissolution, emulsification and dispersion
Dirt often contains human secretions (mainly protein and fatty substances), but also contains sand and dust from the outside world. However, sodium tripolyphosphate has the effect of swelling and solubilization on protein and plays the effect of colloidal solution. For fatty substances, it can promote emulsification. It has a dispersive suspension effect on solid particles.
③ buffering effect
Sodium tripolyphosphate has a large alkaline buffering effect, so that the pH value of the washing solution is maintained at about 9.4, which is conducive to the removal of acid dirt.
④ The role of preventing caking
Powdered synthetic detergent has hygroscopic properties, such as stored in a place with high humidity, caking will occur. Caked detergents are extremely inconvenient to use. The hexahydrate formed by sodium tripolyphosphate after absorbing water has the characteristics of dry. When there is a large amount of sodium tripolyphosphate in the detergent formula, it can prevent the caking phenomenon caused by moisture absorption and maintain the dry and granular shape of the synthetic detergent.
2. Water purification and softener: sodium tripolyphosphate chelates metal ions with metal ions in solution Ca2+, Mg2+, Cu2+, Fe2+, etc., to generate soluble chelates, thereby reducing hardness, and is widely used in water purification and softening.
3. Peel softener: make vegetables and fruits peel soften quickly, shorten cooking time and improve the extraction rate of pectin.
4. Anti-discoloration agent, preservative: can promote the decomposition of vitamin C and color fading, discoloration, can prevent meat, poultry, fish corruption, in order to extend the food storage period.
5. Bleaching protective agent, deodorant: improve the bleaching effect, and can remove the odor in metal ions.
6. Antiseptic and bacteriostatic agent: inhibit the growth of microorganisms, so it plays an antiseptic and bacteriostatic role.
7. Emulsifier, pigment mincemeat dispersant, anti-delamination agent, thickening agent: disperse or stabilize the suspension of insoluble substances in water to prevent the adhesion and condensation of the suspension.
8. Strong buffer and preservative: Control and maintain a stable PH range, which can make food taste more delicious. Control acidity, acid rate.
9. Water retaining agent, softening agent, tenderizing agent: it has an enhanced effect on protein and globulin, so it can increase the hydration and water retention of meat products, improve the penetration of water, promote the softening of food and improve the quality of food, and maintain the good flavor of food.
10. Anti-agglutination agent: In dairy products, it can prevent the agglutination of milk when heating, and prevent the separation of milk protein and fat water.
11. Paint, kaolin, magnesium oxide, calcium carbonate and other industrial preparation of suspension as dispersant.
12. Dyeing AIDS.
13. Drilling mud dispersant.
14. Paper industry used as anti-oil agent.
15. As a degumming agent in ceramic production.
16. Tannery pretanning agent.
17. Industrial boiler water softening agent.
Wholesale Sodium Tripolyphosphate（STPP） Manufacturer and Supplier | EVERBRIGHT (cnchemist.com)
Post time: Jun-24-2024
