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Sodium Tripolyphosphate’s Many Uses

Author: Site Editor     Publish Time: 2022-01-13      Origin: Site

Sodium tripolyphosphate (STPP), also known as sodium triphosphate, is the sodium salt of triphosphoric acid.  STPP is a colorless salt that exists both in anhydrous form Na5P3O10 and in hexahydrate form H12Na5O16P3. It is used in a wide range of applications in the manufacture of cleaning products and food preservatives as well as in water treatment facilities.

Manufacture

Sodium tripolyphosphate is a sodium salt of triphosphoric acid. It is manufactured in chemical laboratories by mixing disodium phosphate and monosodium phosphate.

A Powerful Cleaning Agent

Sodium tripolyphosphate is used in a variety of cleaning products. It improves the ability of various ingredients in the detergent to penetrate the fibers of clothes (as well as other surfaces and materials to be cleaned) more deeply, and aids in foaming and bubbling. Therefore, most chemical plants that make sodium tripolyphosphate list "detergents" as the primary area of use for this chemical.

Food Additive

Sodium tripolyphosphate also gives a fresh appearance to meat and seafood while slowing down spoilage. The chemical helps to preserve the natural color of meat and fish and improves their texture. This is done by improving the water-holding capacity of animal products and consequently slowing down their drying

Tanning Agent for Leather

Sodium tripolyphosphate is listed as a tanning agent for leather. Interestingly, the chemical is also used as an oil contamination resistance agent in paper production. So, it can both help manufacturers apply the right color to a medium as well as keep unwanted color away.

 Other Uses

Other uses of sodium tripolyphosphate include petroleum refining, metallurgy, mine applications and water treatment. The last application is made possible by its pH buffering ability, meaning that it can "soften" acidic water by neutralizing its acidity. This quality is one of the reasons it is added to detergents.


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