Sodium Tripolyphosphate Uses In Water Treatment STPP Cas No 7758-29-4

Product Description:

Sodium Tripolyphosphate (STPP), also referred to as pentasodium triphosphate or sodium triphosphate, has the chemical formula Na₅P₃O₁₀ and a molecular weight of 367.86. It typically appears as white granules or powder, with an apparent density ranging between 0.35 and 0.95 g/cm³. The compound has a high melting point of 622°C.

This substance is highly soluble in water, where it forms an alkaline solution. Over time, STPP undergoes hydrolysis in water, breaking down into orthophosphates. One notable characteristic of STPP is its strong capacity to chelate metal ions.

By binding with metal ions such as calcium, magnesium, and iron, STPP forms soluble complexes that help in softening hard water. Additionally, as an inorganic surfactant, it demonstrates some properties that are comparable to those of organic surfactants, making it useful in various applications.

Features:

This substance effectively binds hardness ions present in water, such as calcium ions (Ca²⁺) and magnesium ions (Mg²⁺). By chelating these ions, it significantly reduces the hardness of water. This action helps to minimize the formation of inorganic salt deposits and prevents scaling issues, ensuring smoother operation of water-using systems.

It acts by dispersing and suspending solid particles and liquid droplets within a mixture, which enhances the stability and uniformity of the system. In the manufacturing of ceramics and building materials, this compound is widely employed as a water reducer, degummer, and dispersant. Its main function is to stabilize body slurries and glaze slurries, making them easier to flow and shape. This leads to improved consistency during processing and higher quality in the final products.

The compound also serves to emulsify and peptize oily and proteinaceous soils. This property boosts the cleaning power of formulations by enhancing their ability to break down and remove tough grease and protein-based dirt. Consequently, detergency and cleaning efficiency are greatly improved.

Finally, it helps maintain a slightly alkaline environment within formulations. This weakly alkaline condition is advantageous for eliminating acidic soils and contributes to the stabilization of the overall formulation performance, ensuring reliable and effective results.

Specifications:

Applications:

In the field of ceramics and building materials, this additive is widely used to enhance the production process. It plays a crucial role in improving the stability of ceramic slurry as well as the performance during forming. These improvements contribute to higher-quality ceramic products.

This compound acts as a builder in synthetic detergents and serves as a booster in soap formulations. Its presence significantly enhances the cleaning power, making detergents and soaps more effective in removing dirt and stains.

In industrial water treatment applications, it functions as a water softener. It effectively inhibits the formation of scale and helps maintain the stability of process water and circulating water systems, thereby improving overall system efficiency.

Within the leather and textile industries, this additive is utilized as a pre-tanning agent in leather production. Additionally, it serves as a dyeing auxiliary in textile processing, enhancing both tanning uniformity and dye uptake for superior quality materials.

The additive functions as a dispersant in various sectors including coatings, mineral processing, and drilling. It helps in preparing stable suspensions of materials such as paints, kaolin, magnesium oxide, and calcium carbonate. Furthermore, it is used as a dispersant in drilling fluids and acts as a grease-proofing agent in the paper industry.

Package and Storage:

Pakage:STPP (Sodium Tripolyphosphate) is typically packaged in plastic Polypropylene woven bags with a polyethylene liner to ensure product integrity and prevent moisture absorption. Common packaging sizes include 25 kg, 40 kg, and 50 kg bags, which are suitable for easy handling and transportation.

Transportation and Storage:Throughout the transportation and storage processes, all necessary precautions shall be taken to ensure the goods are:
(a) safeguarded from exposure to rain and moisture;
(b) protected from damage to their packaging;
(c) not co-handled or co-located with substances that are hazardous, toxic, or pose a risk of pollution.
The storage warehouse must be characterized by dry conditions and good ventilation, and shall be equipped with appropriate damp-proof foundation measures.

FAQ:

Q1: What is the brand name of the Sodium Tripolyphosphate product?

A1: The brand name of the Sodium Tripolyphosphate product is Shenglong.

Q2: Where is the Sodium Tripolyphosphate manufactured?

A2: The product is manufactured in China.

Q3: What certifications does the Shenglong Sodium Tripolyphosphate have?

A3: It is certified with ISO9001, ensuring quality management standards.

Q4: What is the minimum order quantity and the price range for this product?

A4: The minimum order quantity is 25 metric tons (MT), and the price ranges from USD 800 to 1000 per MT on an EXW basis.

Q5: How is the product packaged and what are the delivery terms?

A5: The product is packaged in woven bags with a plastic liner. Delivery time is typically between 7 to 14 days.

Q6: What payment terms are accepted for purchasing Shenglong Sodium Tripolyphosphate?

A6: Accepted payment terms include T/T (Telegraphic Transfer), D/P (Documents against Payment), and L/C (Letter of Credit).

Q7: What is the annual supply capacity for this product?

A7: The supply ability of Shenglong Sodium Tripolyphosphate is 100,000 metric tons per year.