Polyphosphoric acids, aluminum salts
CAS: 82808-63-7
Category: Inorganic Chemicals
| Purity | Industrial Grade ≥95%; High Purity Grade ≥98%; Specialty Coating Grade ≥99% |
| Molecular Formula | Aluminum polyphosphate (Al(PO3)n) |
| Molecular Weight | Variable (typically 120-400+ depending on polymeri |
| Appearance | White or off-white powder; odorless; fine amorphous solid with good dispersibility |
| Packaging | 25 kg kraft paper bags with polyethylene inner liner, 500 kg or 1000 kg PP woven jumbo bags, moisture-proof packaging available |
| Testing Indicators | Appearance — Visual inspection; Particle size — Laser diffraction particle size analyzer; Moisture content — Loss on drying (ASTM D2216); Aluminum content — ICP-OES or EDTA titration; Phosphate content (P2O5) — Gravimetric or spectrophotometric analysis; Chemical composition — X-ray fluorescence spectroscopy (XRF); pH value — pH meter measurement of aqueous suspension; Heavy metals — ICP-MS/ICP-OES analysis. |
| Storage Notes | Store in a cool, dry, and well-ventilated warehouse. Keep container tightly closed and protected from moisture. Avoid exposure to strong acids, strong alkalis, and excessive humidity. Use moisture-resistant packaging during long-term storage. |
| Lead Time | 10 days |
Used as an inorganic phosphate material with applications in corrosion-resistant coatings, fire-retardant formulations, ceramic materials, catalysts, pigments, and specialty chemical formulations. Aluminum polyphosphate is widely used as an environmentally friendly anti-corrosion pigment due to its phosphate ion release and passivation effect on metal surfaces.