Sodium hexametaphosphate (SHMP) 68% is widely used as a concrete admixture component, functioning as a set retarder and water reducer. It improves workability, delays setting time and enhances the final strength of cement-based materials.
| Attribute | Value |
|---|---|
| CAS | 10124-56-8 |
| EINECS NO | 233-343-1 |
| Molecular Formula | (NaPO3)6 |
| Purity (as P2O5) | 68% min |
| Appearance | White powder |
| pH (1% solution) | 6.0-7.0 |
| Water Insoluble Matter | ≤0.05% |
| Shelf Life | 2 years |
25 kg polyethylene woven bags with inner liner, or 1000 kg jumbo bags. Delivery within 5-7 working days. Technical support for dosage optimization available.
Usually 0.05-0.2% by weight of cement, depending on the retarding effect and ambient temperature required.
Properly dosed SHMP improves workability and reduces water demand, which generally contributes to higher final compressive strength.