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Merck
CN

322431

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
NACRES:
NA.23
PubChem Substance ID:
24859317
UNSPSC Code:
12352302
EC Number:
230-785-7
MDL number:
MFCD00011393
Assay:
97%
Form:
solid
Solubility:
water: soluble

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InChI key

RYCLIXPGLDDLTM-UHFFFAOYSA-J

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

SMILES string

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

assay

97%

form

solid

reaction suitability

core: potassium

mp

1300 °C (lit.)

Quality Level

200

solubility

water: soluble

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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.

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.

hcodes

H319

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

Eye Irrit. 2

Storage Class

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
SDBB5698
MKCZ0257
MKCX4915
MKCW4996
STBL4244

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Stable high areal capacity lithium-ion battery anodes based on three-dimensional Ni-Sn nanowire networks
Tian M, et al.
Journal of Power Sources, 211(32), 46-51 (2012)
Development of a base set of toxicity tests using ultrafine TiO2 particles as a component of nanoparticle risk management
Warheit DB, et al.
Toxicology Letters, 171(3), 99-110 (2007)
Electrochemical exfoliation of graphite to produce graphene using tetrasodium pyrophosphate
Kumar MKP, et al.
Royal Society of Chemistry Advances, 5(32), 24846-24852 (2015)
N Conforti et al.
The Journal of clinical dentistry, 11(3), 72-75 (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%
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