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DESCRIPTION
Sodium tripolyphosphate (STP, sometimes STPP or sodium triphosphate or TPP) is an inorganic compound with formula Na5P3O10. Sodium triphosphate is the sodium salt of the polyphosphate penta-anion, which is the conjugate base of triPhosphoric Acid.Sodium tripolyphosphate is produced by heating a stoichiometric mixture of Disodium phosphate, Na2HPO4, and Monosodium Phosphate, NaH2PO4, under carefully controlled conditions.
The uses of Sodium tripolyphosphate also include using it as a preservative. Sodium Tripolyphosphate STPP can be used to preserve foods such as red meats, poultry, and seafood, helping them to retain their tenderness and moisture. Pet food and animal feed have been known to be treated with sodium triphosphate, serving the same general purpose as it does in human food.
SPECIFICATION
| ITEM | STANDARD |
| ASSAY (%) (Na5P3O10) | 95 MIN |
| APPEARANCE | WHITE GRANULAR |
| P2O5 (%) | 57.0 MIN |
| FLUORIDE (PPM) | 10MAX |
| CADMIUM (PPM) | 1 MAX |
| LEAD (PPM) | 4 MAX |
| MERCURY (PPM) | 1 MAX |
| ARSENIC (PPM) | 3 MAX |
| HEAVY MENTAL (AS PB) (PPM) | 10 MAX |
| CHLORIDES (AS CL) (%) | 0.025 MAX |
| SULPHATES (SO42-) (%) | 0.4 MAX |
| SUBSTANCES NOT DISSOLVED IN WATER (%) | 0.05 MAX |
| PH VALUE (%) | 9.5 – 10.0 |
| LOSS ON DRYING | 0.7% MAX |
| HEXAHYDRATE | 23.5% MAX |
| WATER-INSOLUBLE SUBSTANCES | 0.1% MAX |
| HIGHER POLYPHOSPHATES | 1% MAX |
Sodium Tripolyphosphate (STPP) in its technical grade form is a powerful and versatile compound that finds extensive applications across various industries. With its unique chemical properties and diverse functionalities, technical grade STPP plays a pivotal role in enhancing processes and products in fields ranging from detergents to water treatment and beyond. This article explores the broad spectrum of applications for technical grade STPP and its impact on industrial practices.
Understanding Technical Grade Sodium Tripolyphosphate (STPP):
Technical grade STPP is a sodium salt of triphosphoric acid, and its chemical formula is Na5P3O10. It is available in the form of a white crystalline powder, and its technical grade indicates a specific purity level suitable for industrial applications. The compound's ability to act as a builder, sequestrant, and dispersant makes it a valuable asset in various industrial processes.
Applications of Technical Grade STPP:
Detergent Industry:One of the primary applications of technical grade STPP is in the formulation of detergents. Its role as a builder and water softener is critical for enhancing the effectiveness of detergents. STPP helps in preventing the redeposition of dirt, improving soil removal, and ensuring optimal performance in laundry and dishwashing detergents.
Water Treatment:Technical grade STPP is widely used in water treatment processes for its sequestering properties. It helps in preventing scale formation by binding with calcium and magnesium ions, contributing to the efficient operation of water treatment plants and extending the lifespan of pipes and equipment.
Industrial Cleaning Products:The dispersing and emulsifying properties of technical grade STPP make it an essential component in industrial cleaning products. It aids in maintaining stable formulations and improving the cleaning efficiency of products such as degreasers and surface cleaners.
Textile Industry:In the textile industry, technical grade STPP is utilized as a leveling agent and dispersant in dyeing processes. It ensures uniform color distribution, prevents agglomeration of dyes, and enhances the overall quality of dyed textiles.
Ceramic Manufacturing:Technical grade STPP plays a crucial role in ceramic manufacturing by acting as a deflocculant. It improves the flow properties of ceramic slurries, enhances particle dispersion, and contributes to the production of high-quality, defect-free ceramic products.
Food Industry:While food-grade STPP is specifically formulated for direct food applications, technical grade STPP may find use in certain non-direct food applications. For example, it may be employed in cleaning and sanitation processes within food processing facilities.
Conclusion:
Technical grade Sodium Tripolyphosphate (STPP) emerges as a versatile and indispensable compound with a wide array of applications across diverse industries. Its role as a builder, sequestrant, dispersant, and water softener makes it a key ingredient in the formulation of various industrial products. As industries continue to evolve, the versatility and efficacy of technical grade STPP are likely to contribute to ongoing advancements and improvements in industrial processes, ultimately impacting the quality and efficiency of end products across multiple sectors.