STPP, sodium tripolyphosphate, is a mineral compound with the chemical formula Na5P3O10. This substance is also known as sodium triphosphate or tripolyphosphate.
STPP, sodium tripolyphosphate, is a mineral compound with the chemical formula Na5P3O10. This substance is also known as sodium triphosphate or tripolyphosphate.
Sodium tripolyphosphate is a sodium phosphate polymer produced with a variable chain length. This chemical compound, with its phosphate groups, has the ability to absorb water and thus retains moisture from its environment. This property makes sodium tripolyphosphate used as a natural preservative for foods.
This substance is a sodium polyphosphate salt with five anions and the conjugate base of triphosphoric acid.
It is widely produced as a component in many household and industrial products.
As a component of many household and industrial products, it is produced extensively. STPP has wide applications in the fields of detergent production, food preservatives, and also in water hardness treatment equipment.
STPP has extensive applications in the fields of detergent production, food preservatives, and also water hardness treatment equipment.
It is worth mentioning that in various industries, different names are used for this compound. Among them:
Pentasodio tripolifosfato – Rhodiaphos LV
Thermphos – Armofos
Polígono – Tripolo – STPP
The composition of STTP is similar to white salt crystals. This compound is often sold in the market in the form of thermodynamic and synthetic products. To familiarize yourself with the structure, production method, applications, and hazards of this chemical compound, we invite you to continue reading this article.
Production of STPP in Iran
Sodium tripolyphosphate is the sodium salt of triphosphoric acid.
And it is produced by the combination of disodium phosphate and monosodium phosphate.
Karun Phosphate Products Company is the first and only producer of sodium tripolyphosphate in Iran.
To receive a sample of STPP from Chemie Karoon, the sales agency of Karoon Phosphate Products Company has made it possible for you to see the product samples up close.
Sample Request Form
The production of sodium tripolyphosphate in the country’s factories is carried out in two different ways. In the first method, manufacturers use the electrothermal reaction of phosphoric acid. So that initially, they neutralize the chemical reaction of phosphoric acid with sodium compounds such as sodium carbonate in a 1:2 ratio. This process continues until the final mixture contains a combination of disodium phosphate and monosodium in the same ratio.
To ensure that the final compound becomes high-purity sodium tripolyphosphate, the obtained mixture is dried as much as possible. Then it is calcined at a temperature of 300 degrees Celsius until it ultimately becomes sodium tripolyphosphate. The resulting solution will ultimately be as follows:
2 Na2HPO4 + NaH2PO4 → Na5P3O10 + 2 H2O
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But in the second method, the wet process is used, and we will explain its steps in order:
- In this method, phosphoric acid first reacts with a sodium-containing compound and a reaction mixture (as a catalyst) including an aqueous solution of NaH2PO4 and Na2HPO4 with a pH higher than 6.
- Then we heat the reaction mixture at a temperature of 400 to 500 degrees Celsius.
- After the mixture has been properly heated, it is time for the crystallization stage, in which all the mixtures are converted into 7H2O crystals.
- We continue the crystallization process for one more stage to obtain the compound Na4H5(PO4)3.2H2O.
- Now, the crystals obtained from stages 2 and 3 are mixed together and heated at a temperature of 700 degrees Celsius.
This process is referred to as calcining the compound.
In the final stage, we also purify the compounds to obtain STPP in the product.
Analysis of Sodium Tripolyphosphate
In the table below, you can see the analysis of sodium tripolyphosphate or STPP. This analysis pertains to the product available at the company. To order the product, you can contact the sales experts.
What is the production method of STPP?
What is the method of producing STPP?
The production of sodium tripolyphosphate from phosphate salt can be done through two main methods: the solvent method and the thermal method. Next, I will explain both methods:
Halal Method:
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- In this method, the phosphate salt used is usually diammonium phosphate (NH₄₂HPO₄) or sodium phosphate (Na₃PO₄).
- The phosphate salt is dissolved in a solvent such as water to obtain a phosphate saline solution.
- In the next step, sodium hydroxide (NaOH) is added to the phosphatic saline solution.
- This reaction results in the formation of sodium tripolyphosphate and free water compounds.
- After the reaction is complete, the solution obtained from filtration or evaporation contains sodium tripolyphosphate.
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Thermal method:
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- In this method, phosphate salt (such as diammonium phosphate) is dissolved in an aqueous solution.
- Then, the resulting solution is brought to a heating device, such as a dryer or oven.
- At high temperatures, the water in the solution evaporates, and the combined phosphate salt remains as a solid residue.
- In the next step, the remaining solid is mixed with sodium hydroxide (NaOH) and heated to an appropriate temperature.
- This reaction results in the formation of sodium tripolyphosphate, which is dissolved in the solution.
- Finally, through filtration or other separation methods, a solution of sodium tripolyphosphate is obtained.
Strong cleaning agent
- Dishwashing detergents: In the detergent manufacturing industry for dishes, sodium tripolyphosphate is used as a water softener and controller. This compound can help regulate water flow, control corrosion, and eliminate contaminants and deposits in dishes.
- Laundry detergents: In the laundry detergent manufacturing industry, tripolyphosphate is used as a preservative and softening agent. This compound can help facilitate the washing process, remove various stains and impurities, and improve the quality of the wash.
- Floor and carpet cleaning agents: Sodium tripolyphosphate is used in detergents for floors and carpets. This compound can be used for deep cleaning, removing stains and dirt, and preserving color and texture.
- Surface cleaners: In the industries producing cleaning agents for various surfaces such as tiles, ceramics, and stone, sodium tripolyphosphate is used as a preservative and cleaning agent.
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Food Additive
Texto a traducir:Context:Text to translate:Sodium tripolyphosphate is used as a natural preservative in the food industry and in human and animal nutrition. The main applications of tripolyphosphate in the food industry are:- Food preservation: Sodium tripolyphosphate, as a moisture-retaining agent, can prevent moisture increase in food products, thereby preventing their spoilage and deterioration.
- Improvement of emulsion stability: Sodium tripolyphosphate can act as an emulsifying agent and improve the stability of emulsions in food products such as sauces, salad dressings, pastries, and juices.
- Enzymatic control: Sodium tripolyphosphate has the ability to absorb metal ions and can control the activity of enzymes present in food.
- Use in the meat and meat products industry: Due to its memory-preserving properties and antibacterial effects, sodium tripolyphosphate is used as a preservative in the meat and meat products industry.
- Use in dairy products: Sodium tripolyphosphate can be used in the production of dairy products such as desserts, ice creams, and cheeses as a preservative and texture enhancer.
- Use in baking and pastry making: Sodium tripolyphosphate can be used in baking and pastry making as a preservative and to improve the structure and quality of the product.
This property can be used as a preservative to prevent the activity of enzymes that cause organic and living changes in foods.
This substance can extend the shelf life of meat and prevent spoilage and potential damage.
Leather Tanner
Leather Tanning Agent
STPP is used in the leather industry as a preservative and texture enhancer. The applications of sodium tripolyphosphate in the leather industry include:
- Softening agent: Sodium tripolyphosphate is used as a softening agent in leather production.
- Anti-pilling agent: This substance can be used as a memory and anti-pilling agent in the leather industry.
- Anti-wrinkle: Tripolyphosphate is used as an anti-wrinkle agent in the leather industry.
- Antioxidant: Sodium tripolyphosphate can be used as an antioxidant in the leather industry.
- Antibacterial agent: Sodium tripolyphosphate is used as an antibacterial agent in the leather industry.
This compound can increase the flexibility and softness of the leather and improve its texture and smoothness.
This compound can prevent the fuzz on the surface of the leather and improve the appearance and quality of the leather.
This compound can prevent the formation of bulk and wrinkles in leather and maintain a smooth and unaltered surface.
This compound can prevent the oxidation and rusting of leather and improve its resistance and durability.
This compound can prevent the growth and spread of bacteria and microorganisms in leather, improving sanitary conditions and extending the useful life of the leather.
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Tiling
This substance is also used in the tile industry and has multiple applications. The most important applications of sodium tripolyphosphate in tile manufacturing are:
- Initiator and sediment controller: Used as an initiator and sediment controller in tile production.
- Deformation agent: Sodium tripolyphosphate is used as a deformation agent in the tile production process.
- Stabilizing agent: Sodium tripolyphosphate can be used as a stabilizing agent in the production of tiles.
- Dyeing agent: This substance can be used as a dyeing agent in the production of tiles.
- Water absorption reduction: It is used as a factor to reduce water absorption in tiles.
This compound can help regulate and control the deposition of tile particles and improve their stability and consistency.
This compound can help regulate and control the final form and shape of the tiles and create flexibility and deformability in the manufacturing process.
This compound can help strengthen the structure of the tiles and increase their resistance and durability.
This compound can help in adjusting and controlling the color of tiles and creating an attractive and harmonious appearance for the user.
This compound can help reduce the permeability of tiles to water and increase resistance to moisture and water attacks.
Water softener
Water Softener
Reducing water hardness: Sodium tripolyphosphate can be used as a chelating agent to reduce water hardness. When water has a high concentration of other cations (such as calcium and magnesium) that cause water hardness, sodium tripolyphosphate chelates these cations and converts them into insoluble calcium and magnesium deposits. These deposits can detach from the surfaces of appliances and water pipes and are not heavy enough to adhere to the surface and cause scratches.
Prevention of sediment formation: This substance can act as an anti-scaling agent in water systems where hard water and sediment formation are present. By chelating hardness cations such as calcium and magnesium, sodium tripolyphosphate prevents the formation of insoluble deposits like iron scale, calcium and magnesium deposits, and other hard deposits.
Water hardness stabilization: Tripolyphosphate can be used as a stabilizing agent against water hardness. By forming chelates between hard cations and sodium tripolyphosphate, the stability of water hardness is increased, and the effects of water hardness on equipment and water systems are reduced.
An additive in hygiene products
This substance is used in the formulation of many hygiene products, including toothpaste, mouthwash, shampoo, conditioner, temporary and permanent hair dyes, and other cosmetic, hygiene, and skincare products.
Other Applications
Other applications of STPP include oil refining, metallurgy, mining applications, and water treatment.
In the case of water treatment, its pH buffering capability is utilized, meaning that by neutralizing the acidity of acidic water, it causes the water to become “softer.”
This capability is one of the reasons it is added to detergents.
In addition to the above, sodium tripolyphosphate has other applications, including oil refining, metallurgy, extraction and mining applications, and water treatment.
STPP Price
One of the disadvantages of imported goods is that with fluctuations in the dollar price, the product price will also change. But the Karun Phosphate Products Company has met the market’s needs by producing this product domestically.
Purchase Sodium Tripolyphosphate
For ordering and purchasing STPP sodium tripolyphosphate produced in Iran, please contact the sales experts at Shimi Caroon.
What is heavy sodium tripolyphosphate?
To obtain heavy sodium tripolyphosphate, we need to reduce its density compared to regular sodium tripolyphosphate.
To obtain heavy sodium tripolyphosphate, we need to reduce its density compared to regular sodium tripolyphosphate. To do this, we need to mix dry sodium phosphate with water and recycled STPP and heat it at a temperature between 400 to 550 degrees Celsius. The density of the resulting compound is approximately 1.04-1.07 kilograms per cubic decimeter. This compound is used to make strong detergents.Environmental Impacts
As a result of the widespread use of this substance, environmental problems have arisen due to the increased concentration of this substance in surface and subsurface waters.
In the year 2000, global consumption of sodium tripolyphosphate was estimated to be around 2,000,000 tons.
Since this substance has a very high solubility in water, it is not significantly transferred to sewage sludge and therefore, it is not transferred to the soil when the sludge is spread.
No environmental hazards related to the use of STPP in detergents in soil and air have been mentioned.
As part of the components of household cleaning products, tripolyphosphate is present in domestic wastewater.
STPP is mainly transferred to compartments containing aquatic animals through wastewater treatment plants, septic tanks, filtration systems, and other wastewater systems.
Context:STPP is mainly transferred to chambers containing aquatic animals through wastewater treatment plants, septic tanks, filtration systems, and other sewage systems.
Text to translate:Related article: Sale and price of Tegrapon
Decomposition Cycle
Since sodium tripolyphosphate is an inorganic substance, biodegradability studies on it are not applicable.
However, STPP, upon hydrolysis, converts to orthophosphate, which is absorbable by algae and microorganisms.
Therefore, STPP enters the natural phosphorus cycle.
Published credible research in the field of biochemical knowledge confirms that as a result of biochemical activity in contact with wastewater (in sewage pipes and sewage operations), as well as in natural aquatic environments, sodium tripolyphosphate is severely hydrolyzed.
This information allows for the calculation of the “worst-case scenario” to estimate environmental concentrations using the EUSES model and the HERA detergent scenario.
Instead of the 7% regional release rate mentioned in the HERA detergent scenario, a default rate of 10% has been used.
Detailed ecotoxicological studies in aquatic environments have shown that STPP is not toxic to aquatic organisms at EC/LC50 values above 100 mg per liter.
(pulga de agua, pez, alga). For this reason, and due to the temporary presence of sodium tripolyphosphate in the aquatic environment (due to hydrolysis), no research has been conducted to date on the chronic effects of sodium tripolyphosphate on these aquatic organisms.
Therefore, the predicted non-toxic concentrations for the aquatic environment and sediments have been calculated based on the results of aquatic toxicity studies.
The difference between sodium polyphosphate and sodium tripolyphosphate
Sodium tripolyphosphate (STP) is an inorganic compound with the formula Na5P3O10. This compound is a sodium polyphosphate pentaanion salt (the conjugate base of triphosphoric acid) and is produced in bulk in the field of household and industrial products, especially detergents.
Sodium tripolyphosphate consists of 3 phosphate units, while sodium polyphosphate is made up of more than three phosphate units. In fact, sodium polyphosphate is a completely different product from sodium tripolyphosphate and is used as a food ingredient and additive.
In fact, sodium polyphosphate is a completely different product from sodium tripolyphosphate and is used as a food ingredient and additive.
These two substances differ chemically and in their applications.
These two substances differ chemically and in their applications. For more information, refer to the article Sodium Polyphosphate.Frequently Asked Questions
Next, we want to review the most important questions you have about the STPP product or sodium tripolyphosphate together.Considering the superior quality of Iranian products, why is the demand for foreign samples higher?
Due to the unfamiliarity with the Iranian sample, consumers do not have sufficient information about this product. With the possibility of sending sodium tripolyphosphate samples to various parts of the country for laboratory and industrial testing, consumers’ preferences will surely shift towards the high-quality national product.
Is the reasonable price of Iranian STPP a reason for the high quality of its foreign counterpart?
Considering the high exchange rate, transportation, and customs costs, it is difficult to compete with the Iranian product.
Given the high cost of currency, transportation, and customs fees, it is difficult to compete with Iranian products.
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After the production of sodium tripolyphosphate, it may require drying, packaging, and further processing to prepare the final product, which will vary depending on the industry of use.
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Uses and Applications of Sodium Tripolyphosphate
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Uses and Applications of Sodium Tripolyphosphate
STPP is used in the production of various detergents.
STPP is used in the production of various detergents.
This substance improves the penetration of various compounds present in detergents into the fabric (and other surfaces and materials), resulting in better cleaning and also being effective in producing foam and bubbles.
Therefore, most sodium tripolyphosphate manufacturers declare the first application of this chemical as “detergent.” If you want to get acquainted with other raw materials for detergents, read this article.
This compound can help with deep cleaning and removing deposits.
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