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Merck

44939

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:
Molecular Weight:
198.81
NACRES:
NA.21
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
231-843-4
MDL number:
Assay:
≥99.0% (RT)
Form:
powder or crystals
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vapor pressure

10 mmHg ( 693 °C)

Quality Segment

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

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.


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pictograms

CorrosionExclamation mark

signalword

Danger

hcodes

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1

Storage Class

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

does not flash

flash_point_c

does not flash



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