Polyphosphoric Acid
orthophosphoric acid, phosphoric(V) acid
| PROPERTIES & USAGE | ||
| Properties | Usage | |
| Chemical formula | H3O4P | Food additive |
| Molar mass | 97.99 g·mol−1 | Rust removal |
| Density | 1.885 g/mL (liquid) | In medicine |
| 1.685 g/mL (85% solution) | ||
| 2.030 g/mL (crystal at 25 °C) | ||
| Melting point | 42.35 °C (108.23 °F; 315.50 K) | Other applications |
| (anhydrous) | ||
| 29.32 °C (84.78 °F; 302.47 K) | ||
| (hemihydrate) | ||
| Boiling point | 158 °C (316 °F; 431 K) | |
| 213 °C (415 °F; 486 K) | ||
| decomposes | ||