ICSC 0282 - HYDROGEN BROMIDE

HYDROGEN BROMIDE	ICSC: 0282 (March 2001)
Hydrobromic acid

CAS #: 10035-10-6

UN #: 1048 (anhydrous)

EC Number: 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	PREVENTION	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

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

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 by an authorized person, should be considered. The odour warning when the exposure limit value is exceeded is insufficient. Do NOT spray water on a leaking cylinder (to prevent corrosion of the 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.

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 by an authorized person, should be considered.
The odour warning when the exposure limit value is exceeded is insufficient.
Do NOT spray water on a leaking cylinder (to prevent corrosion of the 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