Bromine trifluoride

  • Bromine fluoride
Formula
BrF3
Structure
Description
A colorless to yellow, fuming liquid with a pungent odor.
Uses
Solvent for fluorides.

Registry Numbers and Inventories.
CAS
7787-71-5
EC (EINECS/ELINCS)
232-132-1
RTECS
EF9360000
RTECS class
Other
UN (DOT)
1746
Merck
12,1417
Beilstein/Gmelin
1884 (G)
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
Korea ECL
Listed

Properties.
Formula
BrF3
Formula mass
136.89
Melting point, °C
-127
Boiling point, °C
-101
Vapor density (air=1)
4.7
Critical temperature
327
Density
2.81 g/cm3 (20 C)
Solubility in water
Decomposes
Surface tension
36.3 g/s2
Heat of vaporization
41.3 kJ/mol

Hazards and Protection.
Storage
Separate from acids, alkalies, halogens, slats, metal oxides 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
Complete protective clothing; safety glasses; face shield.
Respirators
Self-contained breathing apparatus.
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
No data.
Incompatibilities
Reacts violently on contact with water to evolve oxygen Reacts dangerously with 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.

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
Not flammable but may cause fire on contact with combustibles. May cause fire in contact with organic materials such as wood, cotton, or straw. Not combustible, but if involved in a fire decomposes to product hydrogen fluoride and hydrogen bromide.
Hazards
Forms very toxic and irritating fumes.
Combustion products
Forms very toxic and irritating fumes in fire.
Health
4
 
Flammability
0
 
 
Reactivity
3
 
 
Special
OW

Health.
Exposure effects
Abnormally low blood pressure may occur after ingestion with corrosive injury and hemorrhage from the gastrointestinal tract. Headache and dizziness have been reported.
   Ingestion
Following ingestion mucosal burns, esophagitis, and gastroenteritis have occurred.
   Inhalation
Inhalation may cause severe irritation of the respiratory tract, cough, delayed pulmonary edema, bronchospasm, chemical pneumonitis, ards, glottal spasm, and glottal edema. Bromine is reported to be a more potent respiratory irritant than chlorine.
   Skin
Dermatitis may occur following inhalation exposure.
   Eyes
Tearing, epistaxis, photophobia, blepharospasm, and brown discoloration of mucous membranes and the tongue may be noted.

First aid
 
   Ingestion
Following ingestion and/or prior to gastric evacuation, immediately dilute with 4 to 8 ounces (120 to 240 ml) of milk or water (not to exceed 15 ml/kg in a child).
   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
Wash with large amounts of water for at least 15 min., then rinse with sodium bicarbonate or lime solution.
   Eyes
Irrigate with copious amounts of water for at least 15 min.

Transport.
UN number
1746
Response guide
Hazard class
5.1
PRTC
T
Packing Group
I
 
USCG CHRIS Code
BTF
 
Std. Transport #
4918507