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P6526

Sigma-Aldrich

Iron(III) pyrophosphate

soluble crystals

Synonym(s):

Diphosphoric acid iron(III) salt, Ferric pyrophosphate

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About This Item

Linear Formula:
Fe4(P2O7)3
CAS Number:
10058-44-3
Molecular Weight:
745.21
EC Number:
233-190-0
MDL number:
MFCD00016091
UNSPSC Code:
12352302
PubChem Substance ID:
57654547
NACRES:
NA.23

form

soluble crystals

composition

Iron content, 10.5-12.5%

concentration

10.5-12.5% (titration)

application(s)

battery manufacturing

SMILES string

[Fe+3].[Fe+3].[Fe+3].[Fe+3].[O-]P([O-])(=O)OP([O-])([O-])=O.[O-]P([O-])(=O)OP([O-])([O-])=O.[O-]P([O-])(=O)OP([O-])([O-])=O

InChI

1S/4Fe.3H4O7P2/c;;;;3*1-8(2,3)7-9(4,5)6/h;;;;3*(H2,1,2,3)(H2,4,5,6)/q4*+3;;;/p-12

InChI key

CADNYOZXMIKYPR-UHFFFAOYSA-B

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General description

Ferric Phosphate is a tan or yellowish white odorless powder. It is insoluble in water and soluble in mineral acids. It can be prepared by reacting sodium pyrophosphate with ferric citrate. It shows good bioaccesibility.

Application

Iron(III) pyrophosphate can be used:
  • As a cathode material for rechargeable batteries such as Na-ion batteries.
  • To fabricate a hybrid overlayer on the surface of metal oxides to boostphotoelectrochemical solar water splitting reaction.

Storage Class Code

11 - 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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Maria Andersson et al.
The American journal of clinical nutrition, 88(5), 1378-1387 (2008-11-11)
Dual fortification of salt with iodine and iron could be a sustainable approach to combating iodine and iron deficiencies. We compared the efficacy of dual-fortified salt (DFS) made by using 2 proposed contrasting formulas-one fortifying with iron as micronized ground
Laura Rossi et al.
Food chemistry, 151, 243-247 (2014-01-16)
Ferric pyrophosphate is a widely used material in the area of mineral fortification but its synthesis and properties in colloidal form are largely unknown. In this article, we report on the synthesis and characterisation of colloidal iron(III) pyrophosphate particles with
Crystal L Richards et al.
Microbial ecology, 76(1), 52-63 (2015-03-23)
Private residences in rural areas with water systems that are not adequately regulated, monitored, and updated could have drinking water that poses a health risk. To investigate water quality on the Crow Reservation in Montana, water and biofilm samples were
Shin-ichi Nishimura et al.
Journal of the American Chemical Society, 132(39), 13596-13597 (2010-09-14)
A new pyrophosphate compound Li(2)FeP(2)O(7) was synthesized by a conventional solid-state reaction, and its crystal structure was determined. Its reversible electrode operation at ca. 3.5 V vs Li was identified with the capacity of a one-electron theoretical value of 110
Perspective on Iron-Based Phosphate Cathode for Commercial Sodium-Ion Cells
Yajing Liu, et al
Small, 19, 2302972-2302972 (2023)
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