The definitive water-reducing agent for high-efficiency ceramic production.
- ✅ Reduce Water Content: Save 10-15% energy in spray drying towers.
- ✅ Improve Flowability: Achieve optimal viscosity without adding excess water.
- ✅ Flawless Glaze: Eliminate pinholes and “crawling” defects.
The definitive deflocculant and water-reducing agent for high-efficiency ceramic production.
- ✅ Reduce Water Content: Save 10-15% energy in spray drying towers.
- ✅ Improve Flowability: Achieve optimal viscosity without adding excess water.
- ✅ Flawless Glaze: Eliminate pinholes and “crawling” defects.
Get Technical Data Sheet (TDS)
Why STPP is Critical for Ceramic Slurry? (The Science)
In ceramic manufacturing, “Mud Mechanics” is everything. If your slurry is too thick, it clogs the pumps; if it’s too watery, you waste fuel drying it out.
STPP acts as a powerful Deflocculant. But how does it work?
1. Ion Chelation (Softening)
Ceramic clay contains Ca²⁺ and Mg²⁺ ions, which cause particles to “flocculate” (clump together). STPP acts as a sequestering agent, locking these ions away effectively.
2. Zeta Potential (Repulsion)
STPP increases the electronegativity of clay particles. This boosts the Zeta Potential, creating a strong repulsive force between particles. The result? A smooth, free-flowing liquid with less water.
Technical Specifications (Ceramic/Tech Grade)
Goway Chemical supplies high-purity STPP specifically calcined for optimal phase distribution.
| Parameter | Standard (GB/T 9983-2004) | Goway Typical Value |
|---|---|---|
| Main Content (Na₅P₃O₁₀) | ≥ 94.0% | 95.2% |
| P₂O₅ Content | ≥ 57.0% | 57.6% |
| Whiteness | ≥ 90.0% | 96.0% |
| Water Insoluble | ≤ 0.10% | 0.05% |
| Iron Content (Fe) | ≤ 0.015% | 0.007% (Low Iron) |
| Phase II Content | – | Controlled (For Solubility) |
💡 Note: Low Iron content is crucial for white ceramic glaze to prevent discoloration.
Comparison: STPP vs. Other Deflocculants
Why choose STPP over cheaper alternatives like Sodium Silicate?
| Deflocculant | Pros | Cons | Best Application |
|---|---|---|---|
| STPP (Our Product) | Stable viscosity; Does not attack plaster molds; High purity. | Higher unit cost than silicate. | High-end Glaze & White Body |
| Sodium Silicate (Water Glass) | Very cheap; Strong thinning effect. | Attacks plaster molds (shortens mold life); Causes “brittle” body. | Low-end slurry; Floor tiles. |
| Sodium Hexametaphosphate (SHMP) | Most powerful dispersant. | Hydrolyzes (degrades) over time; Expensive. | Specialty coatings. |
Troubleshooting: Common Ceramic Defects
🛑 Problem: Glaze Pinholes & Crawling
Cause: High surface tension or poor dispersion of glaze particles.
Solution: Add 0.1% – 0.3% STPP to the ball mill. It acts as a surfactant, smoothing the glaze layer and allowing trapped gas to escape before firing.
🛑 Problem: Slurry “Aging” (Thickening)
Solution: Check the pH and add a small “booster” dose of STPP if viscosity rises.
Beyond Ceramics: Other Industrial Uses
While we specialize in ceramics, our Technical Grade STPP is versatile:
- Detergents: The key builder for removing dirt and preventing re-deposition.
- Water Treatment: Softens hard water and prevents scale in pipes.
Need Food Grade? Visit our Food Ingredients Section.
