SODIUM HEXAMETAPHOSPHATE

SODIUM HEXAMETAPHOSPHATE

EC Number: 233-343-1
CAS Numarası : 10124-56-8

Sodium hexametaphosphate (SHMP) is a salt of composition Na6[(PO3)6]. Sodium hexametaphosphate of commerce is typically a mixture of metaphosphates (empirical formula: NaPO3), of which the hexamer is one, and is usually the compound referred to by this name. Such a mixture is more correctly termed sodium polymetaphosphate. They are white solids that dissolve in water.

Properties

Chemical formula: Na6P6O18
Molar mass: 611.7704 g mol−1
Appearance: White crystals
Odor: Odorless
Density: 2.484 g/cm3
Melting point: 628 °C (1,162 °F; 901 K)
Boiling point: 1,500 °C (2,730 °F; 1,770 K)
Solubility in water: Soluble
Solubility: Insoluble in organic solvents
Refractive index (nD): 1.482

SYNONYMS

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USES

SHMP is used as a sequestrant and has applications within a wide variety of industries, including as a food additive in which it is used under the E number E452i. Sodium carbonate is sometimes added to SHMP to raise the pH to 8.0–8.6, which produces a number of SHMP products used for water softening and detergents.
A significant use for sodium hexametaphosphate is as a deflocculant in the production of clay-based ceramic particles. It is also used as a dispersing agent to break down clay and other soil types for soil texture assessment. 
It is used as an active ingredient in toothpastes as an anti-staining and tartar prevention ingredient.[8]
The energy drink NOS contains sodium hexametaphosphate.
Sodium Hexametaphosphate is a multi-purpose sequestrant and is a versatile ingredient to have on hand for your culinary creations. It is a white, odorless powder used to thicken, emulsify, or add texture to foods, beverages, pet-related goods, and personal care products, and its additionally used in certain methods of chelation. Sodium Hexametaphosphate can be added to an assortment of food, beverage, and personal care applications such as syrups, canned milk, powdered and imitation cheese products, whipped toppings, dips, packaged egg whites and other proteins, jellies, frozen desserts, dressings, cereals, beverages, bath products, cosmetics, pet food, and more. Additionally, Sodium Hexametaphosphate is an ingredient that is commonly added to fruit juices that contain pulp to help prevent the pulp from settling at the bottom.

Industrial uses:

To prepare solution in industries for the production ofceramics, including additives is a mandatory step to obtain a proper uid paste. Therefore, the compound (NaPO3)6 gets used as dispersing agents in the manufacture of ceramics and enamels.
Besides, it helps in breaking down of clay and analysing ofvarious types of soil textures. It is another reason why the compound nds applications in the ceramic industry.
In paper pulp industries, many products require the applications of phosphates. Phosphates comprise dispersing properties that help in reducing the caking of resins and pigments when they are in suspension. Additionally, they play a crucial role in the coating of materials.
The main phosphate that nds its applications in the paper industry is (NaPO3 )6. However, phosphates get used in other forms too. 
The compound on combining with sodium carbonate causes the pH level to increase from 8.0 to 8.6. Such an increase in the pH level is benecial in water softening, and the manufacture of detergents. 
Additionally, the chemical compound acts as an active element in tubes of toothpaste, and it also helps in the prohibition of tartar formation. 
Moreover, the complex gets used as a solvent for cleaning and degreasing purposes.
It also nds its applications in drilling mud since it acts as a viscosity regulator. As an emulsier, the chemical complex nds application in the manufacture of coated paper. 
The chemical complex also has wide uses in reducing the hardness of the water. Due to this property, it is applicable in boiler and industrial water.

Agricultural and Consumer Uses: 

It also gets used in agricultural chemicals that help in the growth of plants and increases its productivity. It primarily gets applied in non-pesticidal purposes that do not interfere in pests’ interaction.
Effects of Calgon 

Calgon or Graham’s Salt is a white powdery substance comprising of sodium and metaphosphates. Although the chemical compound has wide-scale application in various sectors, yet these have some eects on human beings, and plants due to prolonged exposure. The following pointers show some of its impacts. Read them to know more. The chemical compound can result in long-term negative impact in the aquatic surroundings. If it is accidentally inhaled or swallowed, the complex can cause damage to the well-being of a person. When the compound gets absorbed in a human frame, it results in vomiting, diarrhoea and nausea. The compound can also cause headache and dizziness when it gets absorbed by a person for short durations. It also causes fever, tiredness and low blood pressure when it gets injected in a body for a short span. The complex can also cause gastrointestinal infection and allergic reactions when someone comes in its exposure for fewer periods.

Usage areas 

Sodium hexametaphosphate is used as a chelating agent and has applications in a wide variety of industries, including a food additive used under the E number E452i. Sometimes sodium carbonate is added to SHMP to raise the pH to 8.0-8.6, which produces a range of SHMP products used for water softening and detergents.

 An important use for sodium hexametaphosphate is as a dissolving agent in the production of clay-based ceramic particles. It is also used as a dispersant to break down clay and other soil types for soil texture assessment. 

It is used as an anti-staining and anti-tartar ingredient as an active ingredient in toothpastes. It takes the hardness of the water. 

It softens the water and provides better wetting of the dust in the environment. 

It prevents the formation of unwanted salts and cations in the soap or detergent industry. 

Articial maple syrup, canned milk, cheese powder and dips, imitation cheese, whipped tray, packaged egg whites, steak, sh llet, fruit jelly, frozen desserts, salad dressing, herring, breakfast cereal, ice cream, beer and bottled drinks, other In addition to foods, it may contain sodium hexametaphosphate.