Polyphosphoric acid
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
Specifications of Polyphosphoric Acid |
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No. |
Items of Analysis |
Unit |
105% PPA |
115% PPA |
||||
Premium |
First grade |
Qualified product |
Premium |
First grade |
Qualified product |
|||
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 |
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