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Sigma-Aldrich

Polyphosphoric acid

~105% H3PO4 basis

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About This Item

Linear Formula:
Hn+2PnO3n+1
CAS Number:
EC Number:
MDL number:
UNSPSC Code:
12352106
eCl@ss:
38070203
NACRES:
NA.21

Assay

~105% H3PO4 basis

Quality Level

form

viscous liquid

bp

300 °C (lit.)

mp

16 °C

density

1.9 g/mL at 25 °C

InChI

1S/O5P2.H3O4P/c1-2-7-4-3-6(1)5-7;1-5(2,3)4/h;(H3,1,2,3,4)

InChI key

FVYIVXLIMHNYTD-UHFFFAOYSA-N

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General description

Polyphosphoric acid is a hygroscopic, clear and viscous liquid. It has been synthesized by reacting phosphoric acid with phosphorus (V) oxide. It is a moderately strong mineral acid with a wide range of applications. PPA may be used in bone regeneration by treating titanium (Ti) implants.

Application

Polyphosphoric acid may be used in the following processes:
  • Functionalize mesoporous silica–polymer nanocomposites (SBA/PS).
  • As a catalyst in the synthesis of 3,4-dihydropyrimidin-2-(1H)-ones.
  • As a dehydrating agent and phosphorus source in the synthesis of Si, P co-doped carbon (SiPDC) materials.
  • As a catalyst and absorbent of ammonia during the synthesis of dimethyl carbonate (DMC).
  • As a solvent in the synthesis of hyperbranched polybenzoxazoles (HBPBOs).

Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

Hazard Classifications

Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B

Storage Class Code

8A - Combustible corrosive hazardous materials

WGK

WGK 1


Certificates of Analysis (COA)

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Polyphosphoric Acid
Dodd JH.<BR/>
e-EROS Encyclopedia of Reagents for Organic Synthesis. (2001)
Synthesis of hyperbranched polybenzoxazoles and their molecular composites with epoxy resins.
Wu J, et al.
Journal of Applied Polymer Science, 132(18) (2015)
Polyphosphoric acid catalyst for the one-pot synthesis of 3, 4-dihydropyrimidin-2 (1H)-ones by grinding under solvent-free conditions.
Zhao Y, et al.
Indian J. Chem. B, 54(1), 139-141 (2015)
Mesoporous silica polymer nanocomposites encapsulated with polyphosphoric acid for the synthesis of ?-amino carbonyl compounds under environmental benign conditions.
Sachdev D, et al.
New. J. Chem., 39(4), 2633-2641 (2015)
Novel tannin-based Si, P co-doped carbon for supercapacitor applications.
Ramasahayam SK, et al.
Journal of Power Sources, 275, 835-844 (2015)

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