Bromine pentafluoride

Formula
BrF5
Structure
Description
A colorless, fuming liquid with a pungent odor.
Uses
Used predominantly as a fluorinating agent to produce fluorocarbons and as an oxidizer in rocket propellant systems.

Registry Numbers and Inventories.
CAS
7789-30-2
EC (EINECS/ELINCS)
232-157-8
RTECS
EF9350000
RTECS class
Other
UN (DOT)
1745
Merck
12,1416
Beilstein/Gmelin
26349 (G)
Korea ECL
Listed

Properties.
Formula
BrF5
Formula mass
174.89
Melting point, °C
-60
Boiling point, °C
40.5
Vapor pressure, mmHg
328
Vapor density (air=1)
6.05
Critical temperature
197
Density
2.48 g/cm3 (20 C)
Solubility in water
Decomposes
Heat of fusion
5.2 kJ/mol
Heat of vaporization
30.6 kJ/mol

Hazards and Protection.
Storage
Separate from acids, alkalies, halogens, salts, metals, organic matter. Store in a cool, dry, well-ventilated location. Keep cylinders restrained.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Self-contained breathing apparatus, acid suit, and gloves.
Small spills/leaks
Do not use water on material itself. Keep material out of water sources and sewers. Use water spray to knock-down vapors. Neutralize spilled material with crushed limestone, soda ash, or lime.
Stability
Thermostable up to 460 C; fumes in air.
Incompatibilities
Reacts with these other hydrogen-containing substances (among others) vigorously enough to cause a fire or explosion: acetic acid, ammonia, benzene, ethanol, hydrogen, hydrogen sulfide, methane, cork, grease paper, wax Mixtures with acids, halogens, metal halides, metals, nonmetals, or metal oxides at ambient or slightly above ambient temperatures have resulted in violent reaction (nitric acid, sulfuric acid, chlorine, iodine, ammonium chloride, potassium iodide, boron powder, selenium, tellurium, aluminum powder, bismuth, cobalt powder, iron powder, arsenic, nickel powder, chromium trioxide, charcoal, red phosphorus, sulfur dioxide, magnesium oxide.
Decomposition
Not combustible, but if involved in a fire decomposes to produce toxic gases.

Fire.
Fire fighting
Do not use water on material itself. Use dry chemical or carbon dioxide. Cool all affected containers with flooding quantities of water. If large quantities of combustibles are involved, use water in flooding quantities as spray and fog. Use water spray to knock-down vapors.
Fire potential
Noncombustible, but very reactive.
Hazards
Containers may burst when exposed to heat of fire. It will accelerate the burning of combustible material.
Combustion products
Toxic and irritating fumes of hydrogen fluoride and bromine may form in fires.
Health
4
 
Flammability
0
 
 
Reactivity
3
 
 
Special
OW

Health.
Exposure limit(s)
TLV: 0.1 ppm; 0.72 mg/m3 (ACGIH 1991-1992).
Exposure effects
   Ingestion
See Inhalation.
   Inhalation
Dyspnea, bronchospasm (with abnormal pfts and hypoxia), chemical pneumonitis, pulmonary edema (can be hemorrhagic), tracheobronchitis, upper airway obstruction, chemical burns (larynx, trachea, bronchi) and ards may occur following inhalation.
   Skin
See Inhalation.
   Eyes
See Inhalation.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
   Skin
Remove all exposed clothing and jewelry taking necessary precautions to prevent secondary exposure to health care providers. Irrigate exposed areas promptly with copious amounts of water for at least 30 minutes. Wash the skin, including hair and nails, vigorously; do repeated soap washings. Discard contaminated clothing.
   Eyes
Immediately flush eyes with running water for at least 20 minutes.

Transport.
UN number
1745
Response guide
Hazard class
5.1
PRTC
T
Packing Group
I
 
USCG CHRIS Code
BPF
 
Std. Transport #
4918505