NIOBIUM(V) FLUORIDE Chemical Properties

Melting point:

72 °C

Boiling point:

220 °C

Density 

3.92

Flash point:

≈230°C

solubility 

reacts with H2O; slightly soluble in CS2 chloroform

form 

Powder

Specific Gravity

3.92

color 

White to pale yellow

Water Solubility 

Hydrolyzes in water, alcohol, and caustic solutions. Sparingly soluble in CS{2}, chloroform. Forms complexes with Lewis basesSlightly soluble in carbon disulfide and chloroform.

Sensitive 

Moisture Sensitive

Merck 

14,6558

CAS DataBase Reference

7783-68-8(CAS DataBase Reference)

EPA Substance Registry System

Niobium fluoride (NbF5), (TB-5-11)- (7783-68-8)

Safety Information

Hazard Codes 

C

Risk Statements 

20/21/22-34

Safety Statements 

26-27-28-36/37/39-45

RIDADR 

UN 3260 8/PG 2

WGK Germany 

3

Hazard Note 

Corrosive

TSCA 

Yes

HazardClass 

8

PackingGroup 

II

HS Code 

2826199090

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

NIOBIUM(V) FLUORIDE Usage And Synthesis

Chemical Properties

light beige powder

Physical properties

Colorless monoclinic crystals; hygroscopic; density 3.293 g/cm³; melts at 72°C; vaporizes at 236°C; hydrolyzes in water forming hydrofluoric acid and fluoroniobic acid, H2NbOF5; soluble in alcohol, slightly soluble in chloroform, carbon disulfide and sulfuric acid.

Uses

Niobium pentafluoride is used in making other fluoro compounds of niobium.

Uses

Niobium(V) fluoride is used as a starting material to prepare other niobium compounds. It acts as an intermediate during the recovery of niobium metal.

Preparation

Niobium pentafluoride is obtained as an intermediate during the recovery of niobium metal from its ores (See Niobium). It also can be prepared by direct fluorination of niobium metal at 250 to 300°C, either by fluorine gas or anhydrous hydrofluoric acid. The pentafluoride vapors are condensed in a pyrex or quartz tube from which it is sublimed at 120°C under vacuum and collected as colorless crystals.
Also, niobium pentafluroide can be prepared by the reaction of fluorine with niobium pentachloride: 2NbCl₂ + 5F₂ → 2NbF₅ + 5Cl₂.

NIOBIUM(V) FLUORIDE(7783-68-8)Related Product Information

• Pyrrolo[2,1-f][1,2,4]triazine, 2,4,5-trichloro-
• NIOBIUM(V) CHLORIDE
• Niobium oxide
• tris(N-ethylethanaminato)[2-methyl-2-propanaminato(2-)]-niobium
• Trihydridobis(pentaMethylcyclopentadienyl)niobiuM(V)
• CYCLOPENTADIENYLNIOBIUM(V) TETRACHLORIDE
• NIOBIUM ETHOXIDE
• Pentakis(dimethylamino)niobium(V)
• NIOBIUM (IV) OXIDE
• NIOBIUM 2-ETHYLHEXANOATE
• NIOBIUM
• Tantalum
• Dioctylamine
• Dextran
• NIOBIUM(V) FLUORIDE
• NIOBIUM POTASSIUM FLUORIDE
• AMMONIUM HEXAFLUORONIOBATE
• POTASSIUM HEXAFLUORONIOBATE