Sodium Hexametaphosphate (Food Grade) CAS#10124-56-8
High Solubility：This substance boasts outstanding dissolving capacity across both cold‑ and hot‑water systems, yet shows zero solubility within ethanol and other organic solvent groups. Homogenous liquid mixtures can be rapidly prepared to support various food‑grade manufacturing workflows.
Stable pH Performance：Its water‑based solution delivers mildly alkaline characteristics and maintains steady pH readings under ambient conditions. Extended exposure to strongly acidic surroundings will trigger gradual hydrolytic decomposition and alter its functional properties.
Versatile Uses：Within food‑processing sectors, it acts as a moisture‑locking additive, metallic‑ion sequestrant, emulsion stabilizer and food‑quality modifier. These functionalities optimize finished‑food texture and help prolong shelf‑storage duration.
Crystalline Form & Hygroscopic Nature：It occurs as fine white crystalline particles with pronounced moisture‑absorbing behavior. Odorless and non‑hazardous, this material complies with food‑safety specifications, making it well‑suited for standardized formula preparation and air‑tight warehouse preservation.
Sodium hexametaphosphate (SHMP), with the formula (NaPO₃)₆, appears as an odourless white crystalline powder. It delivers outstanding metal sequestration and particle dispersion performance. This phosphate additive features good compatibility when blended with other ingredients, and maintains stable physical characteristics under ambient conditions. It complies with global food-additive criteria and can be safely incorporated into food production processes.
Sodium Hexametaphosphate Chemical Properties
| Property | Value |
| Melting Point | 628 °C (lit.) |
| Density | 2.48 g/cm³ |
| Refractive Index | 1.472 |
| Storage Condition | Below 30°C, sealed and dry environment |
| Solubility | Freely soluble in water, insoluble in ethanol |
| Appearance | Pure white, odorless fine crystalline powder |
| pH (100 g/L, 20°C) | 5.8–7.3 |
| Characteristic | Strongly hygroscopic |
| Stability | Stable at ambient temperature; readily hydrolyzes in strong acid |
Safety Information
| Item | Value |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36 |
| WGK Germany | 1 |
| RTECS | XK3750000 |
| F | Non-flammable |
| TSCA | Yes |
| HS Code | 283539100000 |
| CAS No. | 10124-56-8 |
This polyphosphate compound finds its primary food-grade applications in processed meat, seafood, frozen goods and dairy formulas. It acts as a moisture binder, texture tendering additive and colour stabilizer. By capturing free metal cations, it suppresses oxidative spoilage and preserves the quality of food items. Beyond food manufacturing, it serves multiple industrial purposes: water hardness reducer for water treatment, builder for cleaning formulations, dispersant for textile dyeing, flotation reagent in mineral separation, and anti-scaling additive for boiler systems.
