Sodium Tripolyphosphate (STPP) Product Detail
Sodium Tripolyphosphate (STPP) Product Description
Sodium Tripolyphosphate (STPP) is a white crystalline powder or granular material widely used in detergents, ceramics, water treatment, and food processing. It has excellent emulsifying, dispersing, and chelating properties, making it an essential additive in various industries.
Production Process
STPP is produced through a chemical reaction between sodium carbonate (Na₂CO₃) and phosphoric acid (H₃PO₄). The process involves:
- Neutralization: Sodium carbonate reacts with phosphoric acid to form monosodium and disodium phosphate.
- Dehydration & Polymerization: The phosphates are heated at high temperatures (350-450°C), leading to the formation of sodium tripolyphosphate.
- Cooling & Granulation: The molten STPP is cooled, solidified, and ground into the desired particle size.
Product Specifications
| Item | Specification |
|---|---|
| Product Name | Sodium Tripolyphosphate (STPP) |
| Chemical Formula | Na₅P₃O₁₀ |
| CAS Number | 7758-29-4 |
| Appearance | White powder or granular |
| Purity | ≥94% |
| P₂O₅ Content | 56.0 – 58.0% |
| pH (1% solution) | 9.2 – 10.2 |
| Water Insoluble Matter | ≤0.10% |
| Bulk Density | 0.35 – 0.90 g/cm³ |
| Whiteness | ≥85% |
Note: Values may vary depending on the specific grade and manufacturer.
Applications
- Detergents: Key ingredient in synthetic detergents, improving cleaning performance by softening water and preventing dirt redeposition.
- Water Treatment: Used in industrial and municipal water treatment as a sequestrant and scale inhibitor.
- Ceramics: Enhances the plasticity and strength of ceramic materials.
- Food Industry: As a food-grade additive (E451), it stabilizes processed meat, seafood, and dairy products.
- Textile & Paper Industry: Acts as a dispersing agent to improve product quality.
Packaging & Transportation
- Packaging: STPP is packed in 25kg, and 50kg woven plastic bags with an inner polyethylene lining. 1-ton jumbo bags are available for bulk shipments.
- Loading Capacity:
- 20ft container: 25MT (in 25kg bags)
- 40ft container: 27MT (in 1-ton jumbo bags)
- Storage: Keep in a dry, well-ventilated area away from moisture and acidic substances to prevent caking.
- Shelf Life: 2 years under proper storage conditions.
For high-quality Sodium Tripolyphosphate (STPP) at competitive prices, contact us today! 🚛📦
About Henan Yaros Chemical Co., Ltd.
Henan Yaros Chemical Co., Ltd., founded in 2005 and headquartered in Zhengzhou, Henan Province, specializes in the manufacturing and export of chemical raw materials. With over 18 years of industry experience, we have established a strong reputation for providing high-quality products, competitive pricing, and professional service to customers across Europe, Asia, the Middle East, and beyond.
Our extensive product portfolio includes:
✔ Surfactants & Detergents: SLES, LABSA, AOS, CDEA, CAB
✔ Plastics & Polymers: PVC resin, HDPE, LDPE, LLDPE, PP, PET
✔ Pigments & Colorants: Iron Oxide, Lithopone, Indigo Blue, Sulphur Black
✔ Plasticizers: Dioctyl Phthalate (DOP), Dibutyl Phthalate (DBP), Dioctyl Terephthalate (DOTP), Dioctyl Adipate (DOA), Diisononyl Phthalate (DINP)
✔ Industrial Chemicals: Sodium Hydrosulphite (SHS), Basic Chrome Sulphate (BCS), Sodium Hexametaphosphate (SHMP), Carboxy Methyl Cellulose (CMC), Zinc Oxide, Carbon Black, Sodium Gluconate
✔ Other Specialty Chemicals: Used in detergents, cleaning products, textiles, plastics, petroleum, construction, pharmaceuticals, water treatment, coatings, and more.
We are committed to maintaining the highest quality standards and hold internationally recognized certifications, including ISO 9001:2015, SGS, and FAMI-QS.
🚀 Henan Yaros Chemical Co., Ltd. – Your Reliable Chemical Partner!
Our Certificates
We maintain internationally recognized certifications to ensure product quality, safety, and compliance:
✅ ISO 9001:2015 – Quality Management System Certified
✅ SGS Certification – Third-Party Verified Quality
✅ FAMI-QS Certification – Compliance with Global Standards
Frequently Asked Questions (FAQ)
Q1: What is the difference between STPP for Detergents, Industrial Cleaners, and Water Treatment?
A: STPP for Detergents is primarily used in household and laundry cleaning products, acting as a water softener and enhancing detergent efficiency. STPP for Industrial Cleaners is formulated for heavy-duty cleaning applications, improving grease and stain removal while preventing dirt redeposition. STPP for Water Treatment is used in water purification processes to prevent scale formation and enhance the performance of treatment chemicals.
Q2: What is the minimum order quantity (MOQ)?
A: Our MOQ is 1 ton, with bulk pricing available for larger orders.
Q3: Can I request a sample before ordering?
A: Yes! We provide free samples, and you only need to cover shipping costs.
Q4: How do you ensure product quality?
A: We follow strict quality control procedures, including raw material inspection, in-process monitoring, and final testing.
Q5: What are the payment terms?
A: We accept T/T, L/C, and Western Union, with negotiable terms for bulk orders.
Q6: How fast is the delivery?
A: Standard delivery time is 7-10 days, depending on order quantity and shipping method.
📩 Still have questions? Contact us today!
