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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

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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The crystal structure of iron (II) chloride tetrahydrate.
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Electron microscopy study of CVT grown Fe-sulphides.
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Iron-catalyzed direct C-N bond formation between azoles and amides is described. The oxidative coupling reactions of sp(3) C-H bonds adjacent to a nitrogen atom in amides and sulfonamides with the N-H bond in azoles proceeded smoothly in the presence of
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