Trisodium Phosphate Powder CAS 7601-54-9
Manufacturer Trisodium Phosphate Powder CAS 7601-54-9
- Appearance:Liquid
- Purity:99.8%
- Delivery:30days
- Sample Available:Available
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Name: Trisodium Phosphate Powder
CAS: 7601-54-9
MOQ: 1KG
Directory Guidance on Trisodium Phosphate Powder
Chemical Structure
Basic Info:
| melting point | 1340°C |
| density | 2.536 g/cm3(Temp: 17.5 °C) |
| vapor pressure | 0Pa at 20℃ |
| storage temp. | Inert atmosphere,Room Temperature |
Trisodium Phosphate Powder Introduction:
Trisodium Phosphate Powder， Also known as sodium orthophosphate, its molecular formula is Na₃PO₄. This is one of the representative sodium phosphate salts generated by the neutralization reaction of phosphoric acid with sodium hydroxide or sodium carbonate. In industrial practice and commercial circulation, for the convenience of storage, transportation, and use, the most common form is its dodecahydrate, namely Na∝ PO ₄· 12H ₂ O, which presents a neat white crystal or granular powder appearance. It is one of the most widely used phosphate varieties, and its fundamental and important role occupies a prominent position among many chemical products, becoming a key node connecting basic chemical raw materials with terminal industrial applications.
From the perspective of physical and chemical properties, anhydrous Trisodium Phosphate Powder has a relatively high density, while the common dodecahydrate is a free flowing white solid. It has strong hygroscopicity and is easy to absorb moisture from the air, so special attention should be paid to the dryness of the environment during storage. This substance is easily soluble in water, and the dissolution process is an endothermic reaction. The resulting solution exhibits obvious strong alkalinity, with a pH value usually around 12 or higher. The aqueous solution exhibits strong alkaline reactions to both litmus and phenolphthalein.
Trisodium Phosphate Powder undergoes significant hydrolysis in aqueous solution, and its solution is rich in PO ₄³ ⁻ ions, which can strongly chemically bind with multivalent metal cations in water (such as calcium Ca ² ⁺, magnesium Mg ² ⁺, iron Fe ² ⁺/Fe ³ ⁺, etc.) to form stable water-soluble complexes. This excellent chelating ability is the core foundation of its many functions.
Further investigation into its chemical behavior reveals that Trisodium Phosphate Powder not only has efficient chelating (chelation) ability, but also exhibits good buffering performance. It can resist the drastic fluctuations of solution pH, especially playing a stabilizing role in the alkaline range, which is crucial for many industrial processes that require a stable reaction environment. At the same time, it also has certain dispersion and emulsification characteristics, which help prevent the re deposition of pollutants on the surface of objects or promote the suspension and dispersion of oil stains.
The industrial production of Trisodium Phosphate Powder is usually accomplished through relatively mature chemical process routes. The mainstream method is to use high-purity thermal phosphoric acid or wet process phosphoric acid (depending on the impurity requirements of the application) to neutralize with pure alkali (sodium carbonate, Na ₂ CO3) or caustic soda (sodium hydroxide, NaOH) in strict stoichiometric ratios.
Nature and Specifications:
| Item | Specification |
| Product Name | Trisodium Phosphate Powder |
| CAS No. | 7601-54-9 |
| Appearance | Powder |
| Shelf Life | 2 years |
| Packing | As Your Requirements |
| solubility | H2O: slightly soluble(lit.) |
| form | Powder |
| color | White |
Product service:
- Certificate Of Analysis (COA)
- Material Safety Data Sheet (MSDS)
- Route of synthesis (ROS)
- Method of Aanlysis (MOA)
- Nuclear Magnetic Resonance (NMR)
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- Free Sample
- Factory audit
The Application Situation Of Trisodium Phosphate Powder
The industrial cleaning field is undoubtedly the most important application field of Trisodium Phosphate Powder. In the formula of heavy-duty industrial cleaning agents, hard surface cleaning agents, metal parts cleaning agents, and descaling agents for equipment such as boilers and heat exchangers, it is almost the core detergent and chelating agent. Its main function is to block the calcium and magnesium ions in hard water through complexation, prevent them from forming insoluble calcium-magnesium soap scale or silicate scale, and give full play to the decontamination efficiency of anionic surfactants.
At the same time, the strong alkaline environment it provides is extremely beneficial for hydrolyzing oil stains, saponifying acidic fatty acids, and destroying the organic structure of stubborn stains. The slight corrosion or dissolution of Trisodium Phosphate Powder on the metal surface is helpful to peel off some dense oxide layers or old paint films. In some specific occasions, it can even be used directly as the main alkali of alkaline cleaning agents.
In the field of water treatment, the application of Trisodium Phosphate Powder is also very important, especially in boiler feed water treatment, scale and corrosion inhibition of industrial cooling water systems, and certain links of municipal or industrial sewage treatment. In the boiler system, it can not only effectively chelate the scaling cations (especially calcium, magnesium, and iron ions) brought into the feed water, reducing the risk of scaling of the furnace tubes, but also the phosphates produced by its hydrolysis can form a well-flowing basic calcium phosphate slag with calcium ions under high temperature and high pressure. This type of slag is easier to discharge from the system through sewage discharge.
More importantly, under alkaline conditions (provided by Trisodium Phosphate Powder itself), phosphates can form a very dense and firm phosphate protective film on the clean metal inner wall, effectively isolating the contact between the water and the metal body, thereby providing good corrosion protection for the steel material. In the open cooling water system, it can also play a role in inhibiting scale formation and reducing corrosion tendency.
Trisodium Phosphate Powder has also entered the food processing industry, but its use in food is subject to strict regulations and must be a high-purity product that meets specific food-grade standards (such as FCC standards). In this field, its main functions include serving as an acidity regulator for alkaline leavening agent systems, neutralizing the acidity of dough in some baked goods and maintaining the pH value within an appropriate range;
In dairy products such as cheese making, it is used as a component of emulsifying salts to help stabilize the milk protein dispersion system; in some beverages (such as soda), it is used as a pH buffer to maintain the stability of product flavor; and it can also be used as a processing aid for cleaning food equipment and pipelines. Each application must strictly follow the national food safety standards for the amount of addition and the scope of use.
The light industry and textile industry are also inseparable from Trisodium Phosphate Powder. In the pre-treatment process of textile printing and dyeing, such as the desizing, scouring, and bleaching of cotton fabrics, it is often used in combination with caustic soda. On the one hand, it provides an alkaline environment to remove natural impurities such as pectin and wax (scouring); on the other hand, it uses its chelating ability to block heavy metal ions to prevent them from catalytically decomposing effective ingredients during hydrogen peroxide bleaching and protect fibers from excessive damage.
In the papermaking industry, it can be used as a buffer and chelating agent in pulp production to prevent metal ions such as iron and copper from adversely affecting the color of pulp and the whiteness of paper, and help stabilize the chemical environment of pulping and bleaching. In the leather making process, it is also used for chemical adjustment in steps such as deashing and softening.
The Advantages Of Trisodium Phosphate Powder
From the fundamental performance point of view, the most outstanding advantages of Trisodium Phosphate Powder are its strong alkalinity and efficient chelating power. It can provide a stable and high pH environment (usually 11.5-12.5) in the range of room temperature to medium temperature, which is essential for neutralizing acidic dirt, saponifying grease, and enhancing the washing effect.
At the same time, it has excellent chelating (complexing) ability for multivalent metal ions, especially scale core ions calcium and magnesium, as well as iron and manganese that may interfere with the reaction. This ability is not only far superior to traditional alkaline additives such as soda ash (sodium carbonate) and sodium tripolyphosphate, but also in the face of common organic chelating agents (such as EDTA, NTA, etc.), its chelating efficiency at unit cost is often more economically attractive. This combination makes it like a fish in water when dealing with complex hard water environments or dirt systems containing metal salts.
Compared with pure strong alkali (such as caustic soda), the phosphate ions contained in Trisodium Phosphate Powder give it valuable buffering capacity.This is of great significance for many industrial processes that require strict control of the reaction process (such as scouring and bleaching in textile pretreatment, and enzyme reactions in certain food processes). This buffering stability avoids side reactions or unstable product quality caused by drastic pH fluctuations, ensuring the controllability, repeatability and ultimate effectiveness of the process.
At the commercial level, cost-benefit analysis is always an important consideration for any material selection. The raw materials (phosphoric acid and alkali) of Trisodium Phosphate Powder are widely sourced, and the basic chemical industry is mature, which makes its large-scale continuous production have significant cost advantages. The mature and reliable production process route ensures stable quality and relatively controllable production costs.
Compared with many high-performance but expensive special synthetic organic chelating agents or surfactants (such as EDTA sodium salt), Trisodium Phosphate Powder usually shows obvious competitiveness in the price per unit active ingredient (effective phosphate or effective alkalinity). This economic advantage gives it a strong vitality in the huge industrial cleaning and water treatment markets, especially in the price-sensitive field of mid-to-high-end fine chemical products.
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Related References:
Chemicalbook-Trisodium Phosphate Powder
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