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44939

Sigma-Aldrich

Iron(II) chloride tetrahydrate

puriss. p.a., ≥99.0% (RT)

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Synonym(s):
Ferrous chloride tetrahydrate
Linear Formula:
FeCl2 · 4H2O
CAS Number:
Molecular Weight:
198.81
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

vapor pressure

10 mmHg ( 693 °C)

Quality Level

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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1 of 4

This Item
2202993800241.03861
vibrant-m

44939

Iron(II) chloride tetrahydrate

vibrant-m

220299

Iron(II) chloride tetrahydrate

vibrant-m

380024

Iron(II) chloride tetrahydrate

vibrant-m

1.03861

Iron(II) chloride tetrahydrate

form

powder or crystals

form

powder, crystals or chunks

form

crystals and lumps

form

solid

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

300

anion traces

sulfate (SO42-): ≤100 mg/kg

anion traces

-

anion traces

-

anion traces

sulfate (SO42-): ≤0.01%

vapor pressure

10 mmHg ( 693 °C)

vapor pressure

10 mmHg ( 693 °C)

vapor pressure

10 mmHg ( 693 °C)

vapor pressure

-

pH

2.5 (20 °C, 100 g/L)

pH

2.5 (20 °C, 100 g/L)

pH

-

pH

2.5 (20 °C, 100 g/L in H2O)

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

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 1

flash_point_f

does not flash

flash_point_c

does not flash


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