Polyphosphoric acid , About 84 , 8017-16-1
Synonym(s):
Polyphosphoric acid;PPA
CAS NO.：8017-16-1
Empirical Formula: (H)n+2.(P)n.(O)3n+1
Molecular Weight:
MDL number: MFCD00084480
EINECS: 232-417-0
PRODUCT Properties
| Melting point: | -20°C |
| Boiling point: | 550 °C |
| Density | 2.06 g/mL at 25 °C |
| vapor pressure | 2 hPa (20 °C) |
| storage temp. | Store below +30°C. |
| solubility | Methanol (Soluble), Water (Soluble) |
| pka | 0.91[at 20 ℃] |
| form | Viscous Liquid |
| color | Colorless |
| Specific Gravity | 2.06 |
| Odor | Odorless |
| Water Solubility | MAY DECOMPOSE |
| Sensitive | Hygroscopic |
| Merck | 14,7580 |
| Stability: | Stable. Incompatible with strong bases. Hygroscopic. |
| InChI | 1S/O5P2.H3O4P/c1-2-7-4-3-6(1)5-7;1-5(2,3)4/h;(H3,1,2,3,4) |
| InChIKey | FVYIVXLIMHNYTD-UHFFFAOYSA-N |
| SMILES | [P](=O)(O)(O)O.[p]21[o][p]([o][o]2)[o][o]1 |
| CAS DataBase Reference | 8017-16-1(CAS DataBase Reference) |
| EPA Substance Registry System | Polyphosphoric acids (8017-16-1) |
Description and Uses
Superphosphoric acid is made by the concentration of regular wet-process acid up to P2O5 concentrations of 78%. Granular polyphosphates suitable for bulk blending are made by reacting ammonia with regular wet process acid of 52% P2O5 content and using the heat of reaction to drive off water to produce a phosphate melt of 10-43-0, with about 40% of the phosphorus in the polyphosphate form. These materials are, however, not suitable for bulk blending due to their “sticky” nature (10).
Polyphosphoric Acid is a ligand used as an analytical tool to image nanoparticles through photon emission topography. Used also in the synthesis of pharmaceuticals.
Safety
| Symbol(GHS) |  GHS05 |
| Signal word | Danger |
| Hazard statements | H290-H314 |
| Precautionary statements | P234-P260-P264-P280-P390-P301+P330+P331-P303+P361+P353-P363-P304+P340-P310-P305+P351+P338-P406-P405-P501 |
| Hazard Codes | C |
| Risk Statements | 34 |
| Safety Statements | 45-36/37/39-25-26 |
| RIDADR | 3264 |
| WGK Germany | 1 |
| TSCA | TSCA listed |
| HazardClass | 8 |
| PackingGroup | III |
| HS Code | 28092000 |
| Storage Class | 8A - Combustible corrosive hazardous materials |
| Hazard Classifications | Eye Dam. 1 Met. Corr. 1 Skin Corr. 1B |
| Hazardous Substances Data | 8017-16-1(Hazardous Substances Data) |
| REACH Registrations | Active |
| Limited Quantities | 1.0 L (0.3 gallons) (liquid) or 1 Kg (2.2 lbs) (solid) |
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml) |
