IPCS INCHEM Home
CYANOGEN BROMIDE
ICSC: 0136
Peer-Review Status: 04.12.2000 Validated
Bromine cyanide
Cyanobromide
Bromocyan 
CAS #: 506-68-3 RTECS #: GT2100000
UN #: 1889
EINECS #: 208-051-2
    Formula: BrCN
Molecular mass: 105.9

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Not combustible but forms flammable gas on contact with water or damp air. Gives off irritating or toxic fumes (or gases) in a fire.    In case of fire in the surroundings, use appropriate extinguishing media. 
EXPLOSION      
 
EXPOSURE   AVOID ALL CONTACT!  IN ALL CASES CONSULT A DOCTOR! 
Inhalation Sore throat. Cough. Burning sensation. Convulsions. Dizziness. Headache. Shortness of breath. Laboured breathing. Nausea. Unconciousness. Vomiting.  Use closed system or ventilation.  Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention. 
Skin MAY BE ABSORBED! Redness. Pain. Blisters. Further see Inhalation.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention . 
Eyes Redness. Pain.  Wear safety goggles, face shield or 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 Abdominal pain. Further see Inhalation.  Do not eat, drink, or smoke during work. Wash hands before eating.  Refer for medical attention . See Notes. Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Ventilation. Do NOT let this chemical enter the environment. Sweep spilled substance into covered sealable containers. Carefully collect remainder. Then store and dispose of according to local regulations.  Airtight.
Do not transport with food and feedstuffs.
Marine pollutant. 
EC Classification
 
UN Classification
UN Hazard Class: 6.1; UN Subsidiary Risks: 8; UN Pack Group: I 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-61GTC2-I.
NFPA Code: H3; F0; R1. 
Separated from food and feedstuffs. See Chemical Dangers. Dry. Well closed. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS OR WHITE CRYSTALS WITH PUNGENT ODOUR. 

Physical dangers
The vapour is heavier than air. 

Chemical dangers
Decomposes on heating and on contact with acids. This produces highly toxic and flammable hydrogen cyanide (see ICSC 0492) and corrosive hydrogen bromide (see ICSC 0282). Reacts with strong oxidants. Reacts slowly with water and moisture. This produces hydrogen bromide and hydrogen cyanide. Attacks many metals in the presence of water. 

Occupational exposure limits
TLV (NOT-ESTABLISHED):. 

Routes of exposure
The substance can be absorbed into the body by inhalation of its vapour, through the skin and by ingestion. 

Inhalation risk
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C. 

Effects of short-term exposure
The substance is severely irritating to the eyes, skin and respiratory tract. Inhalation of of the vapour may cause lung oedema. See Notes. The effects may be delayed. The substance may cause effects on the cellular respiration. This may result in convulsions, unconsciousness and respiratory failure. Medical observation is indicated. Exposure could cause death. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 61-62°C
Melting point: 52°C
Density: 2.0 g/cm³
Solubility in water: slow reaction
Vapour pressure, kPa at 25°C: 16.2
Relative vapour density (air = 1): 3.6
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.53
Sublimes at room temperature 
It is strongly advised not to let the chemical enter into the environment. 

NOTES
Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available.
Sublimes at room temperature.
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 spray, by a doctor or a person authorized by him/her, should be considered.
Commercial products are generally solutions in chloroform.
Environmental effects from the substance have not been investigated.
Card has been partly updated in October 2005.
See section Emergency Response. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations