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44939

Sigma-Aldrich

Iron(II) chloride tetrahydrate

puriss. p.a., ≥99.0% (RT)

Synonym(s):

Ferrous chloride tetrahydrate

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About This Item

Linear Formula:
FeCl2 · 4H2O
CAS Number:
13478-10-9
Molecular Weight:
198.81
EC Number:
231-843-4
MDL number:
MFCD00149709
UNSPSC Code:
12352302
PubChem Substance ID:
329756568
NACRES:
NA.21

vapor pressure

10 mmHg ( 693 °C)

Quality Level

200

grade

puriss. p.a.

Assay

≥99.0% (RT)

form

powder or crystals

impurities

≤0.001% total nitrogen (N)

pH

2.5 (20 °C, 100 g/L)

anion traces

sulfate (SO42-): ≤100 mg/kg

cation traces

As: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤50 mg/kg
Cr: ≤10 mg/kg
Cu: ≤5 mg/kg
Fe3+: ≤2000 mg/kg
K: ≤50 mg/kg
Mg: ≤5 mg/kg
Mn: ≤50 mg/kg
Na: ≤50 mg/kg
Ni: ≤50 mg/kg
Pb: ≤10 mg/kg
Zn: ≤20 mg/kg

SMILES string

O.O.O.O.Cl[Fe]Cl

InChI

1S/2ClH.Fe.4H2O/h2*1H;;4*1H2/q;;+2;;;;/p-2

InChI key

WSSMOXHYUFMBLS-UHFFFAOYSA-L

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Application

Iron(II) chloride tetrahydrate can be used as a catalyst in the:
  • Solvent-free Ritter reaction of nitriles with various halohydrocarbons to synthesize N-substituted amides.
  • Synthesis of ketones via indirect hydration of alkynes.
  • Stereoselective reduction of α, β-unsaturated carbonyl compounds to the corresponding saturated alcohols in the presence of lithium and DTBB.
It can also be used as a precursor to prepare iron-bisphosphine complex, which can be used to catalyze Kumada­-Tamao-­Corriu coupling.

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Statements

H302,H318

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

does not flash

Flash Point(C)

does not flash

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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Hui Wei et al.
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Ferrous ion co-catalyst enhancement of dilute-acid (DA) pretreatment of biomass is a promising technology for increasing the release of sugars from recalcitrant lignocellulosic biomass. However, due to the reductive status of ferrous ion and its susceptibility to oxidation with exposure
Maren Depke et al.
Cytometry. Part A : the journal of the International Society for Analytical Cytology, 85(2), 140-150 (2013-12-19)
Throughout the world, infections caused by bacteria such as Staphylococcus aureus are a major cause of morbidity and mortality. In order to gain some understanding of the complicated physiological link between host and pathogen, modern techniques such as confocal microscopy
The crystal structure of iron (II) chloride tetrahydrate.
Penfold BR and Grigor JA.
Acta Crystallographica, 12(11), 850854-850854 (1959)
Chenglong Yuan et al.
International journal of molecular sciences, 20(3) (2019-02-13)
The prion protein (PrPSc) has drawn widespread attention due to its pathological potential to cause prion diseases. Herein, we successfully synthesized Fe₃C@C by carbonizing Fe₃O₄-lignin clusters, which were prepared through a facile hydrogen bonding interaction between ≡Fe-OH and hydroxyl groups
Electron microscopy study of CVT grown Fe-sulphides.
Zavasnik J and Recnik A.
Journal of Crystal Growth, 367, 18-23 (2013)
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