PERRHENIC(VII)ACID

Name	perrhenic acid
Synonyms	Perrheniumsure perrhenic acid PERRHENIC ACID PERRHENIC(VII)ACID hydroxy(trioxo)rhenium perrhenic acid solution
CAS	13768-11-1
EINECS	237-380-4
InChI	InChI=1/H2O.3O.Re/h1H2;;;;/q;;;;+1/p-1/rHO4Re/c1-5(2,3)4/h1H

Molecular Formula	HO4Re
Molar Mass	251.21
Density	2.16g/mLat 25°C
Boling Point	102℃[at 101 325 Pa]
Water Solubility	Soluble in water.
Appearance	Solution
Specific Gravity	2.42
Color	Clear colorless to pale yellow
Storage Condition	Room Temprature
MDL	MFCD00011326
Physical and Chemical Properties	Perrhenic acid is usually colorless or yellow liquid, can also be solid, but easy to absorb water, its chemical stability, almost no oxidation, is a strong monoacid, with zinc, iron, the role of metals such as magnesium to release hydrogen, but also with a series of metal oxides, hydroxides and carbonates to form the corresponding perrhenate.

Hazard Symbols	C - Corrosive
Risk Codes	34 - Causes burns
Safety Description	S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
UN IDs	UN 3264 8/PG 2
WGK Germany	1
TSCA	Yes
HS Code	28111980
Hazard Class	8
Packing Group	II

EPA chemical information	Information provided by: ofmpub.epa.gov (external link)
Introduction	Perrhenic acid (perrhenic acid) is an inorganic compound with the chemical formula HReO4, which is a strong acid. Rhenium is a dilute metal, perrhenic acid and ammonium perrhenate are the most valuable rhenium compounds.
Uses	Perrhenic acid can be used to prepare high-purity metal perrhenates such as Co(ReO4)2, Ca(ReO4)2 and Zn(ReO4)2, etc. These perrhenates are mainly used as solid lubricants and lubricating oil additives. In addition, perrhenic acid, as the precursor of homogeneous catalyst, is mainly used in the production of catalysts used in petrochemical industry.
preparation method	electrodialysis method to prepare perrhenic acid has the advantages of simple process, small rhenium loss, low equipment investment, low reagent cost, high product quality, etc., making it the most promising method for preparing perrhenic acid. In the three-chamber electrodialysis tank, KReO4 is used as raw material to prepare perrhenic acid, platinum is used as anode and stainless steel is used as cathode. Under the best conditions, the utilization rate of rhenium is as high as 99.3%, which shows that the loss of rhenium is really small. However, the volume of the three-chamber electrodialysis tank is very small, only 750 mL, and the concentration of perrhenic acid is more than 300g/L after continuous operation for 25~26 h.

Last Update：2024-04-09 15:16:47

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PERRHENIC(VII)ACID

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