Bromotrifluoromethane

  • Trifluorobromomethane
  • Halon 13b1
  • Freon 13b1
Formula
CBrF3
Structure
Description
Colorless gas with a sweet odor.
Uses
Low temp fire extinguishing agent, refrigerant in environmental test chambers, metal & pharmaceutical processing.

Registry Numbers and Inventories.
CAS
75-63-8
EC (EINECS/ELINCS)
200-887-6
RTECS
PA5425000
RTECS class
Other
UN (DOT)
1009
Beilstein/Gmelin
1732513
Beilstein Reference
4-01-00-00073
Swiss Giftliste 1
G-2015
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
CBrF3
Formula mass
148.92
Melting point, °C
-166.1
Boiling point, °C
-57.8
Vapor pressure, mmHg
122 (25 C)
Vapor density (air=1)
3.8
Critical temperature
67
Critical pressure
39.2
Density
1.5800 g/cm3 (20 C) (liq)
Solubility in water
300 mg/L
Viscosity
0.157 cp @ 25C (liq)
Surface tension
4 g/s2 @ 25 C
Refractive index
1.00098 (20 C)
Partition coefficient, pKow
1.86
Heat of vaporization
17.7 kJ/mol

Hazards and Protection.
Storage
Keep separated from incompatible substances.Protect from physical damage and heat. Containers may rupture or explode if exposed to heat.
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 clothing to prevent any reasonable probability of skin contact. Wear eye protection to prevent any possibility of eye contact.
Respirators
Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive pressure mode. Any supplied-air respirator that has a full facepiece and is operated in pressure-demand or other positive pressure mode in combination with an auxiliary self-contained breathing apparatus operated in pressure-demand or other positive pressure mode.
Small spills/leaks
Attempt to stop leak if without undue personnel hazard.
Stability
Conditions contributing to instability and heat.
Incompatibilities
May react with aluminum to produce substantial heat.
Decomposition
The fire extinguisher halon 1301 begins to decomposition at 400-500 deg to halogen gases, which react with hydrogen to form hydrogen halides. In oxygen, carbon dioxide, carbonyl fluoride and carbonyl bromide may form hazards from decomposition products are negligible as compared to those of other hazards associated with a fire. Toxic gases and vapors (such as hydrogen bromide, hydrogen fluoride and carbon monoxide) may be released when trifluoromonobromomethane decomposes. Under certain conditions, fluorocarbon vapors may decompose on contact with flames or hot surfaces, creating the potential hazard of inhalation of toxic decomposition products.

Fire.
Fire fighting
Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.
Fire potential
May burn but does not ignite readily.
Hazards
Containers may explode when heated. Ruptured cylinders may rocket.
Combustion products
All fluorocarbons will undergo thermal decomposition when exposed to flame or red-hot metal.
Health
0
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure limit(s)
NIOSH REL: TWA 1000 ppm (6100 mg/m3) OSHA PEL: TWA 1000 ppm (6100 mg/m3) IDLH 40,000 ppm
Poison_Class
5
Exposure effects
Headache, dizziness, and disorientation are common. Cerebral edema may be found on autopsy. Dichlorodifluoromethane was not teratogenic in rats and rabbits. <br>The reproductive effects of 1,1,1,2-tetrafluoroethane were studied in rats. No adverse effects on reproductive performance was noted or on the development, maturation or reproductive performance of up to two successive generations.
   Ingestion
Nausea may develop. Ingestion of a small amount of trichlorofluoromethane resulted in necrosis and perforation of the stomach in one patient.
   Inhalation
Pulmonary irritation, bronchial constriction, cough, dyspnea, and chest tightness may develop after inhalation. Chronic pulmonary hyperreactivity may occur. Adult respiratory distress syndrome has been reported following acute inhalational exposures. Pulmonary edema is an autopsy finding in fatal cases.
   Skin
Dermal contact may result in defatting, irritation or contact dermatitis. Severe frostbite has been reported as an effect of freon exposure. Injection causes transient pain, erythema and edema.
   Eyes
EYES - Eye irritation occurs with ambient exposure. Frostbite of the lids may be severe. NOSE - Nasal irritation occurs with ambient exposure. THROAT - Irritation occurs. Frostbite of the lips, tongue, buccal mucosa and hard palate developed in a man after deliberate inhalation.

First aid
 
   Ingestion
These substances may cause frostbite to the upper airway and gastrointestinal tract after ingestion. Administer oxygen and manage airway as clinically indicated. Emesis, activated charcoal, and gastric lavage are not recommended.
   Inhalation
Provide a quiet calm atmosphere to prevent adrenaline surge if the patient is seen before the onset of cardiac arrhythmias. Minimize physical exertion.
   Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists. If frostbite has occurred, refer to dermal treatment in the main body of this document for rewarming.
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility. Ophthamologic consultation should be obtained in any symptomatic patients.

Transport.
UN number
1009
Response guide
Hazard class
2.2
36. Halogenated hydrocarbons
Std. Transport #
4904549 4904508