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P8010

Sigma-Aldrich

Sodium pyrophosphate tetrabasic

≥95%

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Synonym(s):
Sodium diphosphate tetrabasic, Tetrasodium pyrophosphate
Linear Formula:
Na4P2O7
CAS Number:
Molecular Weight:
265.90
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

Quality Level

Assay

≥95%

form

powder

density

2.53 g/mL at 25 °C (lit.)

SMILES string

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

InChI

1S/4Na.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

FQENQNTWSFEDLI-UHFFFAOYSA-J

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1 of 4

This Item
71640S642271501
Sodium phosphate dibasic puriss. p.a., ACS reagent, anhydrous, ≥99.0% (T)

Sigma-Aldrich

71640

Sodium phosphate dibasic

Essential Grade
Sodium pyrophosphate dibasic BioUltra, ≥99.0% (T)

Sigma-Aldrich

71501

Sodium pyrophosphate dibasic

Premium Grade
form

powder

form

powder (or crystals)

form

powder

form

powder

density

2.53 g/mL at 25 °C (lit.)

density

-

density

-

density

-

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

General description

Sodium pyrophosphate tetrabasic (Na4P2O7) is a non-toxic and biocompatible compound used as an electroactive media for exfoliation of the surface coating. It is also be used as an additive in the food industry.

Application

Na4P2O7 can be used as an inorganic additive to improve the stability and electrochemical performance of redox flow batteries.

Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

Precautionary Statements

Hazard Classifications

Eye Dam. 1

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

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Park SK, et al.
Electrochimica Acta, 121, 321-327 (2014)
Effect of inorganic additive sodium pyrophosphate tetrabasic on positive electrolytes for a vanadium redox flow battery
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Effects of phosphate additives on the stability of positive electrolytes for vanadium flow batteries
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