Skip to Content
Merck
All Photos(1)

Key Documents

View All Documentation

433314

Sigma-Aldrich

Pyrophosphoric acid

technical grade

Synonym(s):

Diphosphoric acid

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Linear Formula:
(HO)2P(O)OP(O)(OH)2
CAS Number:
2466-09-3
Molecular Weight:
177.98
EC Number:
219-574-0
MDL number:
MFCD00011343
UNSPSC Code:
12352106
PubChem Substance ID:
329756333
NACRES:
NA.21

grade

technical grade

Quality Level

200

Assay

≥94% (by NaOH, titration)

form

liquid
solid
waxy solid

technique(s)

ion chromatography: suitable

impurities

≥20% H3PO4

SMILES string

OP(O)(=O)OP(O)(O)=O

InChI

1S/H4O7P2/c1-8(2,3)7-9(4,5)6/h(H2,1,2,3)(H2,4,5,6)

InChI key

XPPKVPWEQAFLFU-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Related Categories

Application

Pyrophosphoric acid (diphosphoric acid) may be used in the following processes:
  • As chemical activator in the preparation of activated carbon from leather waste.
  • To modify the surface of calcium hydroxyapatite in order to improve the surface functionality.
  • To modify the surface strontium aluminate nanoparticles potential applications in super-long time in vivo imaging.
  • Synthesis of bis(diisopropylammonium) dihydrogendiphosphate trihydrate (DIPAP).
  • Synthesis of novel 3-methoxybenzylammonium cation diphosphate.

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Statements

H302,H314

Hazard Classifications

Acute Tox. 4 Oral - Skin Corr. 1B

Storage Class Code

8B - Non-combustible corrosive hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
BCCG8399
BCCF2428
BCCD5874
BCCB3382
BCBZ6437

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Structure of synthetic calcium hydroxyapatite particles modified with pyrophosphoric acid.
Tanaka H, et al.
Journal of Colloid and Interface Science, 283(2), 609-612 (2005)
Crystal Structure, 31P, 13C NMR, IR Spectroscopy Investigations and Thermal Behavior of Bis (diisopropylammonium) dihydrogendiphosphate trihydrate.
Guelmami L and Jouini A.
Journal of Chemical Crystallography, 42(12), 1162-1169 (2012)
Surface modification of calcium hydroxyapatite with pyrophosphoric acid.
Tanaka H, et al.
Journal of Colloid and Interface Science, 269(2), 358-363 (2004)
Persistent luminescent nanoparticles for super-long time in vivo and in situ imaging with repeatable excitation.
Sun M, et al.
Journal of Luminescence, 145, 838-842 (2014)
Preparation and characterization of activated carbon from leather waste microwave-induced pyrophosphoric acid activation.
Kong J, et al.
Journal of Analytical and Applied Pyrolysis, 104, 710-713 (2013)
View All Related Papers

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