In laboratories where precision and purity are paramount, researchers require chemical reagents that deliver consistent performance and exceptional quality. Ultra-pure anhydrous sodium tripolyphosphate (STPP) meets these exacting standards while serving critical functions across multiple industrial applications.
Product Overview
This high-grade chemical compound, with the molecular formula Na₅O₁₀P₃ and CAS number 7758-29-4, presents as a white, odorless powder with an impressive 60-month shelf life. Its molecular weight of 367.86 makes it suitable for both laboratory research and industrial manufacturing processes.
Key Characteristics
- Exceptional Purity: Contains no less than 56% total P₂O₅ content and 90% sodium tripolyphosphate, ensuring reliable experimental results.
- Optimal Physical Properties: Maintains stable white powder form at 20°C with a melting point of 622°C. Demonstrates excellent water solubility (145 g/l at 20°C).
- pH Stability: 1% aqueous solution maintains a consistent pH range of 9-10 across various applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Appearance | White powder |
| Total P₂O₅ (w/w) | ≥56% |
| Sodium tripolyphosphate (w/w) | ≥90% |
| pH (1% aqueous solution) | 9-10 |
Safety Information
This product carries GHS07 hazard classification with the following precautions:
- Warning: May cause skin irritation, serious eye irritation, and respiratory irritation.
- Preventive Measures: Avoid inhalation of dust. If contact occurs with eyes, rinse cautiously with water for several minutes, removing contact lenses if present.
Industrial and Scientific Applications
Detergent Manufacturing
As a crucial detergent builder, STPP softens water, enhances cleaning efficiency, and helps suspend soil particles.
Food Processing
Functions as a quality improver in meat products to increase water retention and texture, while preventing protein coagulation in dairy applications.
Ceramic Production
Serves as an effective dispersant to improve the uniformity and mechanical strength of ceramic bodies.
Water Treatment
Prevents scale formation in boiler systems and enhances water treatment processes.
Laboratory Use
Employed as a buffer agent and chelating compound in various chemical and biological experiments.
Storage and Handling
The product is supplied in 1000g containers and should be stored in cool, dry conditions with adequate ventilation. Protect from direct sunlight and moisture exposure. Reseal containers promptly after use.
Manufactured under strict quality control protocols, this ultra-pure anhydrous sodium tripolyphosphate meets all specified technical parameters for research and industrial applications.