MilliporeSigma
All Photos(3)

398608

Sigma-Aldrich

Polyphosphoric acid

~105% H3PO4 basis

Linear Formula:
Hn+2PnO3n+1
CAS Number:
EC Number:
MDL number:
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

Looking for similar products? Visit Product Comparison Guide

Related Categories

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
2082138.07471438081
Polyphosphoric acid ~105% H3PO4 basis

Sigma-Aldrich

398608

Polyphosphoric acid

Polyphosphoric acid reagent grade, 115% H3PO4 basis

Sigma-Aldrich

208213

Polyphosphoric acid

Polyphosphoric acid for synthesis

Sigma-Aldrich

8.07471

Polyphosphoric acid

Phosphoric acid ACS reagent, ≥85 wt. % in H2O

Sigma-Aldrich

438081

Phosphoric acid

form

viscous liquid

form

viscous liquid

form

viscous liquid

form

liquid

bp

300 °C (lit.)

bp

300 °C (lit.)

bp

530 °C/1013 hPa

bp

158 °C (lit.)

mp

16 °C

mp

-

mp

-20 °C

mp

~40 °C (lit.)

density

1.9 g/mL at 25 °C

density

2.06 g/mL at 25 °C

density

2.06 g/cm3 at 20 °C

density

1.685 g/mL at 25 °C (lit.)

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)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (Example: T1503).

Example:

T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Customers Also Viewed

Slide 1 of 6

1 of 6

Supelco

Supelco

LH20100

Sephadex® LH-20

Phosphoric acid 85 wt. % in H2O, 99.99% trace metals basis

Sigma-Aldrich

345245

Phosphoric acid

Phosphoric acid crystalline, ≥99.999% trace metals basis

Sigma-Aldrich

466123

Phosphoric acid

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)
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)
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)

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service