261963
Perrhenic acid solution
75-80 wt. % in H2O, liquid
Synonym(s):
Hydrogen perrhenate, Hydrogen tetraoxorhenate
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About This Item
Linear Formula:
HReO4
CAS Number:
Molecular Weight:
251.21
UNSPSC Code:
12161600
PubChem Substance ID:
NACRES:
NA.22
MDL number:
Product Name
Perrhenic acid solution, 75-80 wt. % in H2O
SMILES string
O[Re](=O)(=O)=O
InChI
1S/H2O.3O.Re/h1H2;;;;/q;;;;+1/p-1
InChI key
UGSFIVDHFJJCBJ-UHFFFAOYSA-M
form
liquid
reaction suitability
core: rhenium, reagent type: catalyst
concentration
75-80 wt. % in H2O
density
2.16 g/mL at 25 °C
Quality Level
Related Categories
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.
signalword
Danger
hcodes
Hazard Classifications
Eye Dam. 1 - Skin Corr. 1B
Storage Class
8A - Combustible corrosive hazardous materials
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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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)
Alexiane Thevenet et al.
Dalton transactions (Cambridge, England : 2003), 49(5), 1446-1455 (2020-01-10)
Technetium is present as the pertechnetate anion in spent nuclear fuel solutions, and its extraction by several extractant systems is a major problem for the liquid-liquid extraction processes used to separate uranium and plutonium. To prevent technetium extraction into the
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)
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
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