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Sodium Hexametaphosphate

E No.:E452(i)
CAS NO.:7758-29-4
Einecs No.:231-838-7
Hs code:2835391100
Payment Term:L/C, D/P, T/T
QC:HACCP, Halal, Kosher, ISO



Sodium Hexametaphosphate (SHMP) is an inorganic compound of sodium salt and hexaphosphoric acid. It is sometimes called Sodium Polymetaphosphate, which stands for a more correct chemical term, but is rarely used among manufacturers, suppliers, and distributors. In general, all applications of SHMP fall into two grades: food grade and industrial/tech grade.
Sodium Hexametaphosphate is used in a variety of food products and is labeled as E452i, although it is generally recognized as safe when applied in foods. Due to its characteristics of sequestrant, thickener, emulsifier, and texturizer, SHMP can be found in many daily products that we consume.

One of the most common applications of SHMP Tech gradeis water treatment, where it acts as a sequestrant, water softening, deflocculating, dispersing and antiscale agent. Basically, it is aimed to prevent the steel and mineral corrosion. A particular case of SHMP use is the case of when it is added into a boiler compound to settle calcium hardness down in factory boiler waters with high calcium level.
Industrial applications of SHMP are numerous and some of them appear to be helpful in diverse domains with one and the same property. Due to its anti-staining and tartar prevention capabilities, SHMP is successfully used as an active ingredient in toothpaste and other tooth whitening products, and it is also added to dog foods for the same reason.
SHMP is used to stabilize the emulsion and to improve the corrosion inhibition in the paint and coating industry. During the production, it acts as a dispersing agent affecting the pigment particles and increasing the protection properties of a product. This formulation allows the formation of a thin film which is useful in paper making industry and in metallurgy as well.
In addition, SHMP can usually be found indetergent formulations and such products like dishwashers, bath salts, and soaps.



Product Name: Sodium Hexametaphosphate Batch No: 2011021811 Package: 25kg/Bag
Mfg. Date: 18 Feb. 2022 Expi Date: 18 Feb. 2024 Quantity: 60000kg
Analysis Test Method Standard request Analysis results Single verdict
(Total phosphate       % GB/T1890-2005 Min.68 68.2 Pass
Inactive phosphate      % GB/T1890-2005 Max. 7.5 5.75 Pass
Water insoluble     % GB/T1890-2005 Max.0.06 0.02 Pass
PH ( 1%) GB/T1890-2005 5.8-6.5 6.0 Pass
Iron content Fe              ppm GB/T1890-2005 Max.200 60 Pass
Fluoride (as F)     ppm GB/T1890-2005 Max.30 15 Pass
Arsenic (as As)    ppm GB/T1890-2005 Max.3 2 Pass
Heavy Metal(as Pb) ppm GB/T1890-2005 Max.10 8 Pass
Particle size (passing rate of 60 mesh sieve) Passing rate of 60 mesh sieve 100% 100% Pass
Verdict This batch of products meets the requirements of Food Additives Sodium Hexametaphosphate (GB/T1890-2005).

What are the Uses?

SHMP can be used in food and beverage, personal care products, water treatment, and other industrial uses. Available in granular, glassy or powdered forms in the market. It exists food grade and technical grade in the market.


Generally, it is a multi-functional ingredient that can work as a texturizer, PH regulator, metal ions chelating agent, binder, bulking agent and etc. 

Food grade SHMP can be used as a cross-linking agent to react with starch to produce modified food starch by increasing starch molecular weight and stabilize the starch structure.

It is also commonly used with other sodium phosphates in the processing of fish, shellfish and other aquatic products as a water-retaining agent and quality or taste improver. Plus, we can also find it as an emulsifying salt in process cheese.

Let’s see its two common food applications.


SHMP is used in a variety of beverage products. It extends shelf life, enhances flavor, and also improves clarity and prevents turbidity, such as in fruit juices and carbonated beverages. It can also stabilize the protein and enhance flavor in a protein drink.

Canned food

SHMP stabilizes natural pigments in canned beans, fruits and vegetables, and therefore protect its color. Also, it can emulsify fat in canned meat, resulting in maintaining uniform texture.

Food grade SHMP can also be used with other sodium phosphates to retain moisture, enhance flavor, and increase shelf life in the processing of meats, cheese, dairy products, seafood, and poultry.


Per the “European Commission database for information on cosmetic substances and ingredients”, SHMP functions as anticorrosive, chelating and masking agents in cosmetic and personal care products. 

We can find the following personal care products with SHMP and its functions:

  • Bath salts: soften the water and adjust pH.
  • Toothpastes and Mouthwashes: remove calcium from stains on teeth.

Water treatment

The technical grade of SHMP is mainly used in water treatment as a sequestrant. It can reduce formation, corrosion, lead/copper leaching, and biofilm formation in pipes and other equipment. And it can chelate certain metal oxides, such as Ca, and Mg.

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