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📌 Detailed Introduction of Sodium Trimetaphosphate (STMP)
✔ What is Sodium Trimetaphosphate?
Sodium Trimetaphosphate (Na₃P₃O₉) is a white, odorless, crystalline powder with excellent chelating and dispersing properties. It is commonly used as a sequestrant, stabilizer, and thickening agent in food processing and industrial applications.
✔ CAS Number & Chemical Formula:
CAS Number: 7785-84-4
Chemical Formula: Na₃P₃O₉
✔ E Number (Food Additive):
E451(i) – Approved as a Food Additive by Global Regulatory Bodies
📌 Applications of Sodium Trimetaphosphate (STMP)
✔ Food Industry (E451(i) Additive)
Stabilizer & Thickening Agent: Used in processed meats, seafood, and dairy products to improve texture and stability.
Modified Starch Production: Enhances the functionality of starch in instant foods, noodles, and bakery products.
Moisture Retention Agent: Prevents dehydration in frozen and processed foods.
pH Regulator & Emulsifier: Maintains food quality in carbonated beverages and sauces.
✔ Industrial Applications
Water Treatment: Acts as a chelating agent to prevent scale formation and metal ion interference.
Detergents & Cleaning Agents: Enhances cleaning efficiency by softening water and preventing mineral deposits.
Ceramics & Construction: Improves binding and dispersion in ceramic glazes and cement formulations.
Textile & Paper Industry: Used as a sizing agent to improve fabric strength and paper quality.
📌 Production Method & Raw Materials
✔ Raw Materials Used:
Sodium Carbonate (Na₂CO₃) and Phosphoric Acid (H₃PO₄)
✔ Production Process:
Neutralization: Sodium carbonate reacts with phosphoric acid to form sodium phosphate.
Polymerization: The sodium phosphate undergoes thermal treatment to form sodium trimetaphosphate.
Cooling & Grinding: The final product is cooled and ground into a fine powder.
📌 Product Specifications (Food & Industrial Grade)
| Property | Specification |
|---|---|
| Appearance | White crystalline powder |
| Purity (%) | ≥ 95% |
| pH (1% Solution) | 5.8 - 7.3 |
| Water Insolubles | ≤ 0.5% |
| Heavy Metals (ppm) | ≤ 10 ppm |
| Solubility | Soluble in water |
| Loss on Drying (%) | ≤ 1.0% |
| Packaging | 25kg bags or customized |
| Shelf Life | 24 months |
📌 Famous Sodium Trimetaphosphate (STMP) Brands Worldwide
Innophos (USA)
ICL Group (Israel/Europe)
Prayon (Belgium)
Jiangsu Khonor Chemicals Co., Limited (China)
📌 Why Choose Jiangsu Khonor Chemicals Co., Limited?
✔ High-Purity STMP – Food & Industrial Grade Certified
✔ Stable Supply & Competitive Pricing – Direct Manufacturer Support
✔ Custom Packaging & Global Shipping – Fast & Efficient Logistics
✔ Strict Quality Control – Meets International Standards
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Looking for a reliable supplier of Sodium Trimetaphosphate (STMP) (E451(i))? Jiangsu Khonor Chemicals Co., Limited provides premium STMP with bulk pricing and worldwide shipping.
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Sodium trimetaphosphate (STMP) has several applications across different industries due to its properties as a sequestrant, emulsifier, and water softener. Here are some common applications of sodium trimetaphosphate:
Water Treatment:
STMP is used in water treatment processes to control scale formation caused by metal ions. It can sequester or chelate metal ions, preventing them from precipitating and forming scale in pipes and equipment. This helps in maintaining the efficiency of water systems.
Detergents and Cleaning Agents:
Sodium trimetaphosphate is added to detergents and cleaning agents to enhance their performance. It acts as a water softener, reducing the hardness of water by sequestering calcium and magnesium ions. This helps detergents work more effectively and prevents the formation of soap scum.
Food Industry:
In the food industry, STMP is used as a food additive. It serves as a stabilizer and emulsifier in certain food products, improving texture and shelf life. Additionally, it can prevent discoloration in processed fruits and vegetables.
Industrial Processes:
STMP is employed in various industrial processes where the control of metal ions is crucial. This includes applications in the textile industry, metal plating, and manufacturing processes where the presence of metal ions can interfere with the desired chemical reactions.
Oil Drilling:
Sodium trimetaphosphate is sometimes used in the oil and gas industry, particularly in drilling fluids. It can help control the viscosity of drilling mud and prevent the precipitation of certain minerals that can impede drilling operations.
Cosmetics:
Some cosmetics and personal care products may contain STMP as an ingredient. It can contribute to the stability and consistency of formulations, particularly in emulsions and creams.