Sodium Hexametaphosphate Ceramic Deflocculant
CAS Number: 10124-56-8
Sodium hexametaphosphate (SHMP), also known as Calgon, is a potent inorganic deflocculant for ceramic slips containing clay minerals. Its polymeric phosphate chain strongly adsorbs onto clay edges and surfaces, maintaining electrosteric repulsion and enabling ultra-high solids loading (65–72 wt%) in sanitaryware and porcelain slip casting operations.
Technical Specifications
| appearance | White glassy powder or granules |
| purity (%) | ≥68 (as P2O5) |
| moisture (%) | ≤0.5 |
| iron content (%) | ≤0.005 |
| pH (1% solution) | 6.5–7.5 |
Applications
- High-efficiency deflocculant for sanitaryware slip casting
- Dispersant in porcelain and stoneware slip preparation
- Glaze suspension stabilizer
- Deflocculant in technical oxide slips (alumina, zirconia)
- Sequestrant to prevent calcium interference in slips
Key Features
- Stronger deflocculating power than STPP for high-clay-content slips
- Effective sequestrant that removes Ca2+ and Mg2+ interference
- Enables very high solids loading with low viscosity
- Works across a wide pH range typical of ceramic slips
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CAS Number
10124-56-8
Category
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