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261963

Sigma-Aldrich

Perrhenic acid solution

75-80 wt. % in H2O

Synonym(s):

Hydrogen perrhenate, Hydrogen tetraoxorhenate

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About This Item

Linear Formula:
HReO4
CAS Number:
Molecular Weight:
251.21
MDL number:
UNSPSC Code:
12352300
PubChem Substance ID:
NACRES:
NA.22

form

liquid

Quality Level

reaction suitability

core: rhenium
reagent type: catalyst

concentration

75-80 wt. % in H2O

density

2.16 g/mL at 25 °C

SMILES string

O[Re](=O)(=O)=O

InChI

1S/H2O.3O.Re/h1H2;;;;/q;;;;+1/p-1

InChI key

UGSFIVDHFJJCBJ-UHFFFAOYSA-M

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Application

  • Perrhenic acid solution (HReO4) can be used in dehydrations of oximes, amides, and urea.
  • HReO4 can also catalyze azeotropic dehydration of syn- or anti-aldoximes to yield corresponding nitriles.
  • In combination with tertiary arsines, it gives a versatile catalytic system for epoxidation of alkenes with hydrogen peroxide.

It is also used to prepare highly conducting and superconducting synthetic metals.

Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

Hazard Classifications

1 - Eye Dam. 1 - Skin Corr. 1B

Storage Class Code

8A - Combustible, corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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Alexiane Thevenet et al.
Dalton transactions (Cambridge, England : 2003), 50(5), 1620-1630 (2021-01-21)
The extraction of technetium, present in nitric acid medium as pertechnetate anion, is an issue in solvent extraction processes used to recover uranium and plutonium. In the present study, a complexing agent is added in the aqueous nitric acid solution
Rhenium catalysed epoxidations with hydrogen peroxide: tertiary arsines as effective cocatalysts.
van Vliet, Michiel CA et al.
Journal of the Chemical Society, 114(3), 377-380 (2000)
Inorg. Synth., 26, 386-386 (1989)
Rhenium (VII) oxo complexes as extremely active catalysts in the dehydration of primary amides and aldoximes to nitriles.
Ishihara, Kazuaki et al.
Angewandte Chemie (International Edition in English), 114(16), 3109-3112 (2002)
Rhenium (VII) Oxide.
eEROS (Encyclopedia of Reagents for Organic Synthesis), 114(16), 3109-3112 (2001)

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