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Home >Phosphorus Chemical Products > >Polyphosphoric Acid (short form: PPA)
Polyphosphoric Acid (short form: PPA)
  • Category:Phosphorus Chemical Products
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Molecular Formula: Hn+2PnO3n+1 

Molecular Weight: 337.93 

 

Properties:

Clear colorless viscous liquid, deliquescent, soluble in water with hydrolysis to phosphoric acid.

Use:

PPA is widely used in industries including medicine, aromatics, leather, chemical industry, etc.. It is used as cyclizing agent, acidifier and dehydrant in organic synthesis. It can also be used as the substitute for orthophosphoric acid.

Packing:

In IBC drums.

 

 Specifications of Polyphosphoric Acid

No.

Items of Analysis

Unit

95% PPA

105% PPA

115% PPA

1

PPA

%

≥95.0

≥105.0

≥115.0

2

P2O5

%

≥68.5

≥76.0

≥83.3

3

Chloride as Cl

%

≤0.0005

≤0.0005%

≤0.0005%

4

SO4

%

≤0.005%

≤0.005%

≤0.005%

5

Iron as Fe

%

≤0.002%

≤0.002%

≤0.002%

6

Arsenic as  As

%

≤0.0001%

≤0.004%

≤0.004%

7

Heavy metal as Pb

%

≤0.0005%

≤0.003%

≤0.003%

8

Fluoride as F

%

≤0.0005%

≤0.0005%

≤0.0005%

9

Color

Apha

≤30

≤30

≤40

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