POLYPHOSPHORIC ACID (PPA)
Molecular formula: Hn + 2PnO3n + 1
Molecular weight: 337.93
Properties: PPA is a colorless transparent viscous liquid, easy to deliquesce, non-crystalline, corrosive, can be miscible with water and hydrolyzed to orthophosphoric acid, specific gravity 2.1g / CM3.
Uses: Polyphosphoric acid is widely used in medicine, perfume, leather, chemical industry and other industries. It is used as a compound cyclizing agent, acidulant and dehydrating agent in organic synthesis. It can also be used as a substitute for orthophosphoric acid.
Packing: IBC barrel
| No. | Items of Analysis | Unit | 105% PPA | 115% PPA | ||||
|---|---|---|---|---|---|---|---|---|
| 1 | （H3PO4） | % | 104~106 | ≥115.00 | ||||
| 2 | P2O5 | % | 75.3~76.7 | ≥83.30 | ||||
| 3 | Chloride as Cl | % | 0.0003 | 0.0005 | 0.0005 | 0.0003 | 0.0005 | 0.0005 |
| 4 | Iron as Fe | % | 0.001 | 0.002 | 0.002 | 0.001 | 0.002 | 0.002 |
| 5 | Arsenic as As | % | 0.004 | 0.008 | 0.010 | 0.0005 | 0.008 | 0.010 |
| 6 | Heavy metal as Pb | % | 0.001 | 0.001 | 0.002 | 0.001 | 0.001 | 0.002 |
| 7 | Color | Apha | 20 | 30 | 40 | 20 | 30 | 40 |
