Basic information Safety Supplier Related

VANADIUM PENTAFLUORIDE

Basic information Safety Supplier Related

VANADIUM PENTAFLUORIDE Basic information

Product Name:
VANADIUM PENTAFLUORIDE
Synonyms:
  • VANADIUM PENTAFLUORIDE
  • Vanadium(V) fluoride
  • Vanadium(V)pentafluoride
  • Five vanadium fluoride
CAS:
7783-72-4
MF:
F5V
MW:
145.93
EINECS:
232-023-9
Mol File:
7783-72-4.mol
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VANADIUM PENTAFLUORIDE Chemical Properties

Melting point:
19.5°
Boiling point:
bp 47.9°
Density 
d419.5 2.502
solubility 
reacts with H2O
form 
colorless liquid
color 
colorless
Water Solubility 
hydrolyzed in H2O, dilute alkali; soluble anhydrous HF [MER06]
crystal system
Nogata
Space group
Pmcn
Lattice constant
a/nmb/nmc/nmα/oβ/oγ/oV/nm3
0.541.6720.7539090900.6799
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Safety Information

RIDADR 
2922
HazardClass 
8
PackingGroup 
I
HS Code 
2826199090
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VANADIUM PENTAFLUORIDE Usage And Synthesis

Chemical Properties

liquid; etches glass slowly at room temp; appreciable vapor pressure at room temp; enthalpy of vaporization 44.52 kJ/mol; enthalpy of fusion 49.96 kJ/mol [CRC10] [MER06]

Synthesis

A small nickel or platinum boat containing VF 4 is placed in a nickel tube and gradually heated to 650°C in a stream of dry N2 . The exit gases are collected in a large-diameter quartz trap maintained at —78°C. The trap is attached to a drying tube with anhydrous KF to exclude atmospheric moisture. The heating process must be effected slowly, since otherwise the unreacted VF4 is blown out of the reaction tube. The product is allowed to cool in a nitrogen stream and the VF5 is discharged directly from the gas trap into a storage container. A greenish-yellowish residue (VF4) remains in the boat. The yield is almost quantitative.

storage

The product is stored in sealed iron, nickel, copper or platinum containers.

VANADIUM PENTAFLUORIDESupplier

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