Sodium Pyrophosphate Na4P2O7
| HS Code | 496138 |
| Chemical Formula | Na4P2O7 |
| Molar Mass | 265.902 g/mol |
| Appearance | White, granular or crystalline powder |
| Odor | Odorless |
| Density | 2.534 g/cm³ |
| Melting Point | 880 °C |
| Solubility In Water | Soluble |
| Ph Of Aqueous Solution | Alkaline (around 9 - 10.5 in 1% solution) |
| Hygroscopicity | Hygroscopic |
| Crystal Structure | Monoclinic |
| Cas Number | 7722-88-5 |
As an accredited Sodium Pyrophosphate Na4P2O7 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Sodium Pyrophosphate Na4P2O7 is packed in wooden boxes or thick paper bags with moisture-proof materials inside and tightly sealed. The contents of each box or bag are clearly marked according to market regulations. |
| Storage | Sodium Pyrophosphate Na4P2O7 should be stored in a dry place away from moisture and acid and alkali, stacked in an orderly manner, and inspected regularly. |
| Shipping | When transporting Sodium Pyrophosphate Na4P2O7, it is necessary to protect it from rain and snow, carry it gently, prevent the packaging from being damaged, and separate it from other items to avoid confusion. |
Competitive Sodium Pyrophosphate Na4P2O7 prices that fit your budget—flexible terms and customized quotes for every order.
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Historical Development
The history of Sodium Pyrophosphate Na4P2O7 began with the exploration of chemistry. In the past, scholars studied phosphides and gradually mastered their characteristics and preparation methods. After years of precipitation, from the early simple process, countless craftsmen and researchers have repeatedly explored and improved it. Today, the preparation process is mature, the product quality is stable, and it is widely used in many fields.
Product Overview
Sodium Pyrophosphate Na4P2O7 is white powder or granular, odorless and tasteless. It is easily soluble in water, and the aqueous solution is weakly alkaline. It has important uses in food, industry and other fields. It can be used as a quality improver, buffer, etc. It is an indispensable chemical product.
Physical & Chemical Properties
In terms of physical properties, Sodium Pyrophosphate Na4P2O7 has a fine texture, a high melting point, and moderate hygroscopicity. It is chemically stable, but under certain conditions, it can react with metal ions to form a complex, and can also slowly hydrolyze in an aqueous solution to change the pH of the solution.
Technical Specifications & Labeling
Technical Specifications has strict requirements on the content, impurities and other indicators of Sodium Pyrophosphate Na4P2O7. The main content (measured in Na4P2O7) must meet the specified standards, and the content of impurities such as chlorides and heavy metals is strictly limited. When labeling, the product name, specifications, manufacturer, production date, implementation standards, and warning signs such as "moisture-proof" are clearly marked in a conspicuous place on the package for easy use and supervision.
Preparation Method
Sodium Pyrophosphate Na4P2O7 is usually prepared with phosphoric acid and soda ash as raw materials. The two are mixed in proportion and reacted at high temperature to first generate disodium hydrogen phosphate, and then polymerized and dehydrated to obtain the finished product. During the reaction, the temperature, time and raw material ratio must be precisely controlled to ensure stable product quality.
Chemical Reactions & Modifications
Sodium Pyrophosphate Na4P2O7 can undergo hydrolysis in aqueous solution to produce products such as disodium hydrogen phosphate. It can react with metal ions to form stable complexes, which are used for the separation and purification of metal ions. It can be modified to meet the needs of different industries by changing the reaction conditions or adding other reagents.
Synonyms & Product Names
Sodium Pyrophosphate Na4P2O7's Synonyms include tetrasodium pyrophosphate, etc. Although the names are different in different documents, industries or regions, they all refer to this compound.
Safety & Operational Standards
When using and operating Sodium Pyrophosphate Na4P2O7, operators should wear protective gloves, masks and other equipment to avoid contact between the product and the skin and eyes. If contact is accidental, rinse immediately with plenty of water. Storage and transportation must comply with relevant regulations, and the workplace should be well ventilated and equipped with necessary fire-fighting facilities.
Application Area
Sodium Pyrophosphate Na4P2O7 can be used as a moisture retainer and quality improver in the food industry to improve the taste and shelf life of food; in the industrial field, it is used in electroplating, printing and dyeing, detergents and other industries to play a role in complexation and dispersion.
Research & Development
At present, the research and development of Sodium Pyrophosphate Na4P2O7 continues to advance. Researchers are committed to optimizing the preparation process, reducing production costs, and improving product purity; exploring its application potential in emerging fields such as new energy and new materials.
Toxicity Research
Toxicity Research shows that Sodium Pyrophosphate Na4P2O7 has low toxicity and is less harmful to the human body and the environment under normal use. However, excessive intake or long-term exposure to high-concentration products may affect human health, and safety regulations must still be followed when using it.
Future Prospects
The Future Prospects of Sodium Pyrophosphate Na4P2O7 are broad. With the development of industries such as food and industry, the demand for it will continue to grow. In addition, with continuous innovation in scientific research, its application areas are expected to be further expanded and the production process will become more advanced.
Where to Buy Sodium Pyrophosphate Na4P2O7 in China?
As a trusted Sodium Pyrophosphate Na4P2O7 manufacturer, we deliver:
Factory-Direct Value: Competitive pricing with no middleman markups, tailored for bulk orders and project-scale requirements.
Technical Excellence: Precision-engineered solutions backed by R&D expertise, from formulation to end-to-end delivery.
Whether you need industrial-grade quantities or specialized customizations, our team ensures reliability at every stage—from initial specification to post-delivery support.
As a leading Sodium Pyrophosphate Na4P2O7 supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.
How is Sodium Pyrophosphate Na₄P₂O₇ made?
This substance is mostly made of sodium dihydrogen phosphate as the base, and is made by calcination and dehydration. It is placed in a kiln and roasted at an appropriate temperature to gradually remove the moisture, polymerize the molecules, and obtain white crystalline Sodium Pyrophosphate Na₄P₂O₇. The process is like clay making, which requires precise temperature control. If it is too much, it will burn, and if it is not enough, it will not be made. The ancients said that "fierce fire produces pure gold", which is also similar. Only when the temperature is appropriate can a pure product be obtained.
What does Sodium Pyrophosphate Na₄P₂O₇ look like and what is its nature like?
It is mostly in the form of white crystals or powder. The crystals are like fine salt with clear edges and corners; the powder is like frost, fine and without residue. It looks pure and unmixed. If placed in the sun, it has a slight luster and glitters. It feels smooth and easy to spread when twisted. The best ones are those without lumps. It is stable in nature. It reacts very slowly with air and water at room temperature, but it is easy to decompose when exposed to strong heat and produces phosphoric acid when exposed to acid. It is easily soluble in water, and there is no sound when it dissolves. The aqueous solution is alkaline and tastes slightly astringent. If it is placed in a humid place for a long time, although it does not absorb moisture very much, it will clump slightly after more than a month, and its nature will be slightly reduced. When it comes into contact with metals, except for a few types such as copper and iron, it does not corrode most of the time, so when storing and using it, there is no need to worry about the damage to the vessel.
Where can Sodium Pyrophosphate Na₄P₂O₇ be applied?
It has a wide range of uses, covering the food, industry, and dyeing industries. In food, it can be used as an emulsifier and added to meat products to blend fat and water, making the meat tender and juicy, and not burnt after long cooking; when used as a chelating agent, it can remove impurities in the water, making the beverage clear and transparent, and the taste pure. In industry, it helps detergents to remove dirt, decompose grease and dirt, and make clothes and utensils clean as new; when treating metals, it can remove surface rust and make them as bright as before. For example, in dyeing factories, it can also be used to condition dyes, so that the pigments are evenly attached to the fabrics, and they are not easy to fade after washing and drying. In addition, in the ceramic industry, it can be used as a flux to lower the melting point of glaze and make the porcelain surface smooth and delicate. All of these rely on its ability to combine various things and adjust their properties, so it is valued by all industries.
What should be followed when storing Sodium Pyrophosphate Na₄P₂O₇?
It should be stored in a dry and sealed container in a cool place, away from direct sunlight and moisture. If it is wet, it will easily clump. Although it can still be reused, it is inconvenient to use. The ancients needed to avoid mold when storing grain, and the same principle applies to storing this product. Keep it dry so that it can be stored for a long time without changing its quality.
What is the difference between Sodium Pyrophosphate Na₄P₂O₇ and Sodium Acid Pyrophosphate?
Although both contain sodium and pyrophosphate, the sodium content in their molecular structures is different, and their properties are also very different. Sodium Pyrophosphate Na₄P₂O₇ has a higher sodium content, so it is more alkaline, and the pH value of its aqueous solution is about 10; while Sodium Acid Pyrophosphate has a lower sodium content, is more acidic, and has a pH value of about 4.5. In terms of use, the former is mostly used for industrial and food stabilization, such as metal processing and water retention in meat products; the latter is better at food expansion, and adding it to bread and pastries can make the finished product loose and porous, and taste better. In terms of preparation, the former requires high-temperature calcination and dehydration, while the latter can be made through low-temperature reaction. The two are like brothers from the same clan. Although they come from the same source, their temperaments and expertise are different. Users should distinguish their properties so that they can do their best.
