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CYANOGEN BROMIDE ICSC: 0136
Date of Peer Review: April 2000

Bromine cyanide
Cyanobromide
Bromocyan
CAS # 506-68-3 BrCN
RTECS # GT2100000 Molecular mass: 105.9
UN # 1889
EC Index #
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Not combustible but forms flammable gas on heating. 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. Unconsciousness. Vomiting.
Closed system and 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.
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 take to a doctor.
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! Ventilation. Sweep spilled substance into sealable containers. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment. Personal protection: complete protective clothing including self-contained breathing apparatus.
Airtight. Do not transport with food and feedstuffs. Marine pollutant.
EU Classification
UN Classification
UN Hazard Class: 6.1
UN Subsidiary Risks: 8
UN Pack Group: I
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-61GTC2-I
NFPA Code: H 3; F 0; R 1;
Separated from food and feedstuffs. See Chemical Dangers. Dry. Well closed.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK
CYANOGEN BROMIDE ICSC: 0136
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS OR WHITE CRYSTALS, WITH PUNGENT ODOUR.

PHYSICAL DANGERS:
The vapour is heavier than air.

CHEMICAL DANGERS:
The substance decomposes on heating and on contact with acids producing 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 to produce hydrogen bromide and hydrogen cyanide. Attacks many metals in 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 20C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is severely irritating to the eyes, the skin and the respiratory tract. Inhalation of the vapour may cause lung oedema (see Notes). The effects may be delayed. The substance may cause effects on the cellular respiration, resulting in convulsions, unconsciousness and respiratory failure. Medical observation is indicated. Exposure may result in death.

PHYSICAL PROPERTIES
Boiling point: 61-62C
Melting point: 52C
Density: 2.0 g/cm
Solubility in water: slow reaction
Vapour pressure, kPa at 25C: 16.2
Relative vapour density (air = 1): 3.6
Relative density of the vapour/air-mixture at 20C (air = 1): 1.53
ENVIRONMENTAL DATA
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


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2005