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)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
Precautionary statements:	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.