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Polyphosphoric Acid (PPA)
IDENTIFICATIONSynonyms:
Phospholeum; Tetraphosphoric acid; Superphosphoric acid; PPA
De: Polyphosphorsäuren
ES: Ácidos polifosfóricos
Fr: Acides polyphosphoriques
CAS No.: 8017-16-1
EC No.: 232-417-0
Molecular Weight: 337.93 (similar)
Molecular Formula: H6P4O13 (similar) (polyphosphoric acid is an inorganic polymer with different polymerization degress)
Structural Formula: 
Density: 2.05
M.P.: 550°C
Freezing Point.: 16°C
Polyphosphoric acid is made by the process of ...
APPLICATIONPolyphosphoric acid has many applications such as:
1) Cyclizing agent and acylating agent in organic synthesis;
2) Alternative for phosphoric acid;
3) Dehydration agent
4) Use as a stabilizer in manufacturing Polyester (PET chip/fiber), Polyurethane (PU)
SPECIFICATION| Parameters | Specification |
|---|---|
| Appearance | colorless and transparent sticky liquid |
| Content as H3PO4 | 116%, 115%, 110%, 105% |
| Chlorides as Cl | 0.0005% max. |
| Heavy metals (as Pb): | 0.0030% max. |
| Iron (Fe): | 0.0020% max. |
| Arsenic | 0.008% max. |
40kgs per Jerry can, 340kg per 200L plastic drum, 1600kg per 100L IBC (tote)
HYGROSCOPIC LIQUID
Polyphosphoric acid is regulated by UN as corrosive liquid without no sub-risks.
Hazard Class: 8,
UN Number: UN1805,
Packing Group: III
For more information, please refer to MSDS.
