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322431

Sigma-Aldrich

Potassium pyrophosphate

97%

Synonym(s):

Potassium diphosphate tetrabasic, Tetrapotassium diphosphate

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About This Item

Linear Formula:
K4P2O7
CAS Number:
7320-34-5
Molecular Weight:
330.34
EC Number:
230-785-7
MDL number:
MFCD00011393
UNSPSC Code:
12352302
PubChem Substance ID:
24859317
NACRES:
NA.23

Quality Level

200

Assay

97%

form

solid

mp

1300 °C (lit.)

SMILES string

[K+].[K+].[K+].[K+].[O-]P([O-])(=O)OP([O-])([O-])=O

InChI

1S/4K.H4O7P2/c;;;;1-8(2,3)7-9(4,5)6/h;;;;(H2,1,2,3)(H2,4,5,6)/q4*+1;/p-4

InChI key

RYCLIXPGLDDLTM-UHFFFAOYSA-J

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General description

Potassium pyrophosphate (K4P2O7) is a water soluble, buffering and chelating agent. It can also be used as an ionic dispersant to form a low viscous solution. It is a biocompatible and a non-toxic compound that is commonly used as a food additive.

Application

K4P2O7 can be used in the preparation of an electrolytic solution, which can further be used in the fabrication of lithium ion batteries and arrays of copper nanowires.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H319

Hazard Classifications

Eye Irrit. 2

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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’.

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Pyrophosphate coupling with chelant-enhanced soil flushing of field contaminated soils for heavy metal extraction
Yan DYS and Lo IMC
Journal of Hazardous Materials, 199(3), 51-57 (2012)
Enhancing Ni-Sn nanowire lithium-ion anode performance by tailoring active/inactive material interfaces
Tian M, et al.
Journal of Power Sources, 196(23), 10207-10212 (2011)
Copper nanowire arrays surface wettability control using atomic layer deposition of TiO 2
Abdulagatov AI, et al.
Russian Journal of Applied Chemistry, 89(8), 1265-1273 (2016)
J Sowinski et al.
The Journal of clinical dentistry, 11(3), 68-71 (2001-07-20)
The objective of this double-blind clinical study, conducted in harmony with the Volpe-Manhold design for studies of dental calculus, was to compare the effect on supragingival calculus formation of a dentifrice containing pyrophosphate, tripolyphosphate and a copolymer in a 0.243%
B E Kohut et al.
The Journal of clinical dentistry, 8(5), 138-141 (1997-01-01)
One-hundred and fifty (150) healthy adult subjects, who readily form dental calculus under normal brushing conditions, completed this study to determine the efficacy of an essential oil dentifrice formulation containing 1.3% pyrophosphate ion (PPi) in inhibiting the development of supragingival
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