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436011

Sigma-Aldrich

Iron(III) phosphate dihydrate

Fe 29 %

Synonym(s):

Ferric phosphate dihydrate

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About This Item

Linear Formula:
FePO4 · 2H2O
CAS Number:
Molecular Weight:
186.85
MDL number:
UNSPSC Code:
12161600
PubChem Substance ID:
NACRES:
NA.22
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form

powder

Quality Level

composition

Fe, 29%

reaction suitability

core: iron
reagent type: ligand
reaction type: Cross Couplings

functional group

amine
phosphine

SMILES string

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

InChI

1S/Fe.H3O4P.2H2O/c;1-5(2,3)4;;/h;(H3,1,2,3,4);2*1H2/q+3;;;/p-3

InChI key

BMTOKWDUYJKSCN-UHFFFAOYSA-K

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Application

Iron(III) phosphate dihydrate (FePO4 x 2H2O) can be used as a catalyst in the synthesis of:
  • 3,4-dihydropyrimidin-2(1H)-ones and thiones by reacting with aldehydes, β-ketoesters and urea/thiourea via one pot-three component Biginelli reaction.[1]
  • Methyl methacryalate (MMA) by oxidative dehydrogenation of methyl iso-butarate (MIB).[2]

It can be also used in the synthesis of carbon coated lithium iron phosphate (LiFePO4) as the cathode material for lithium ion batteries.[3][4][5] It is also used as a key ingredient in preparing phosphate glass fibers.[6]

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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A novel process to recycle spent LiFePO4 for synthesizing LiFePO4/C hierarchical microflowers.
Bian D, et al.
Electrochimica Acta, 190, 134-140 (2016)
Jun-Il Kim et al.
Journal of nanoscience and nanotechnology, 12(11), 8475-8480 (2013-02-21)
A composite of LiFePO4 and MgO-templated disordered mesoporous carbon was prepared through infiltrating a LiFePO4 precursor solution into the mesoporous carbon and growing LiFePO4 nanocrystals in the pore of the carbon. Transmission electron microscope (TEM) and scanning electron microscope (SEM)
Synthesis of porous amorphous FePO4 nanotubes and their lithium storage properties.
Ren Cai et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 19(5), 1568-1572 (2013-01-03)
Preparation and Electrochemical Properties of the Spongelike Melamine Formaldehyde-Poly (vinyl alcohol)/LiFePO4 Porous Composite as the Lithium-Battery Cathode
Roddecha S, et al.
Industrial & Engineering Chemistry Research, 58(2), 632-642 (2018)
Fabian Rohner et al.
The Journal of nutrition, 137(3), 614-619 (2007-02-22)
Particle size is a determinant of iron (Fe) absorption from poorly soluble Fe compounds. Decreasing the particle size of metallic Fe and ferric pyrophosphate added to foods increases Fe absorption. The aim of this study was to develop and characterize

Questions

1–3 of 3 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  3. 해당 제품이 결정질인가요 혹은 비정질인가요? is this sample crystalline or amorphous?

    1 answer
    1. This product does not undergo X-ray diffraction testing to validate the crystal structure. Unfortunately, the state of this compound has not been determined.

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