NIOBIUM(V) FLUORIDE

CAS NO.：7783-68-8
Empirical Formula: F5Nb
Molecular Weight: 187.9
MDL number: MFCD00011129
EINECS: 232-020-2
SAFETY DATA SHEET (SDS)
Update Date: 2023-10-17 17:11:56

What is NIOBIUM(V) FLUORIDE?

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.

The Uses of NIOBIUM(V) FLUORIDE

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.

The Uses of NIOBIUM(V) FLUORIDE

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

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.

Properties of NIOBIUM(V) FLUORIDE

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
color	White to pale yellow
Specific Gravity	3.92
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 for NIOBIUM(V) FLUORIDE

Signal word	Danger
Pictogram(s)	Corrosion Corrosives GHS05 Exclamation Mark Irritant GHS07
GHS Hazard Statements	H314:Skin corrosion/irritation
Precautionary Statement Codes	P260:Do not breathe dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.