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HYDROGEN BROMIDEICSC: 0282
March 2001
CAS #: 10035-10-6Hydrobromic acid
UN #: 1048 (anhydrous)
EINECS #: 233-113-0

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Not combustible. Heating will cause rise in pressure with risk of bursting.  Risk of fire and explosion on contact with metals as a result of hydrogen formation.      In case of fire in the surroundings, use appropriate extinguishing media.  In case of fire: keep cylinder cool by spraying with water. NO direct contact with water. 

 AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR! 
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Burning sensation. Cough. Sore throat. Laboured breathing. Shortness of breath. Symptoms may be delayed. See Notes.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Half-upright position. Refer for medical attention. 
Skin ON CONTACT WITH LIQUID: FROSTBITE. Redness. Pain. Blisters.  Cold-insulating gloves. Protective clothing.  ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention . 
Eyes Redness. Pain. Severe deep burns.  Wear eye protection in combination with breathing protection.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion   Do not eat, drink, or smoke during work.   

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Evacuate danger area! Consult an expert! Personal protection: gas-tight chemical protection suit including self-contained breathing apparatus. Ventilation. NEVER direct water jet on liquid. Remove gas with fine water spray. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 2.3; UN Subsidiary Risks: 8 

STORAGE
Separated from incompatible materials. See Chemical Dangers. Cool. Dry. Ventilation along the floor. 
PACKAGING
 
HYDROGEN BROMIDE ICSC: 0282
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS COMPRESSED LIQUEFIED GAS WITH PUNGENT ODOUR. 

Physical dangers
The gas is heavier than air. 

Chemical dangers
The solution in water is a strong acid. It reacts violently with bases and is corrosive. Reacts violently with strong oxidants and many organic compounds. This generates fire and explosion hazard. Attacks many metals. This produces flammable/explosive gas (hydrogen - see ICSC 0001). 

Formula: HBr
Molecular mass: 80.9
Boiling point: -67°C
Melting point: -87°C
Relative density (water = 1): 1.8
Solubility in water, g/100ml at 20°C: 193
Vapour pressure, kPa at 20°C: 2445
Relative vapour density (air = 1): 2.8  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation. 

Effects of short-term exposure
The substance is corrosive to the eyes, skin and respiratory tract. Inhalation of this gas may cause lung oedema. See Notes. Rapid evaporation of the liquid may cause frostbite. 

Inhalation risk
A harmful concentration of this gas in the air will be reached very quickly on loss of containment. 

Effects of long-term or repeated exposure
 


Occupational exposure limits
TLV: 2 ppm as STEL.
MAK: 6.7 mg/m3, 2 ppm; peak limitation category: I(1); pregnancy risk group: D.
EU-OEL: 6.7 mg/m3, 2 ppm as STEL 

ENVIRONMENT
 

NOTES
The occupational exposure limit value should not be exceeded during any part of the working exposure.
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort.
Rest and medical observation are therefore essential.
Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered.
The odour warning when the exposure limit value is exceeded is insufficient.
Do NOT spray water on leaking cylinder (to prevent corrosion of cylinder).
Turn leaking cylinder with the leak up to prevent escape of gas in liquid state.
Other UN number: 1788 Hydrobromic acid (solution), hazard class 8. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: C; R: 35-37; S: (1/2)-7/9-26-45 

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    See Also:
       Toxicological Abbreviations