Niobium(V) bromide

  • Niobium pentabromide
  • Niobium bromide
Formula
Br5Nb
Structure
Description
Wine red to black orthorhombic crystals

Registry Numbers and Inventories.
CAS
13478-45-0
EC (EINECS/ELINCS)
236-778-5
20/21/22 34
26 27 28 36/37/39 45
UN (DOT)
3260
Beilstein/Gmelin
62449 (G)
Canada DSL/NDSL
NDSL
US TSCA
Listed
Korea ECL
Listed

Properties.
Formula
Br5Nb
Formula mass
492.43
Melting point, °C
257
Boiling point, °C
364
Density
4.36 g/cm3 (25 C)
Heat of fusion
35.6 kJ/mol
Heat of vaporization
131.0 kJ/mol

Hazards and Protection.
Storage
Keep tightly closed. Store in a cool dry place. Store under nitrogen.
Protection
Wear appropriate government approved respirator, chemical-resistant gloves, safety goggles, other protective clothing. Faceshield (8-inch minimum).
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Sweep up, place in a bag and hold for waste disposal. Avoid raising dust. Ventilate area and wash spill site after material pickup is complete.
Incompatibilities
Strong acids.
Decomposition
Hydrogen bromide gas.

Fire.
Fire fighting
Extinguish using Use extinguishing media appropriate to surrounding fire conditions. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Emits toxic fumes under fire conditions.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
Corrosive. Causes burns. Harmful by inhalation, in contact with skin and if swallowed.
   Ingestion
See Inhalation.
   Inhalation
TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed.
   Skin
Contact with molten substance may cause severe burns to skin and eyes. See Inhalation.
   Eyes
See Inhalation.

First aid
 
   Ingestion
If swallowed, wash out mouth with water provided person is conscious. Call a physician.
   Inhalation
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
   Eyes
Assure adequate flushing of the eyes by separating the eyelids with fingers.

Transport.
UN number
3260
Response guide
Hazard class
8
Packing Group
II