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BORON TRICHLORIDE ICSC: 0616
October 1997
Boron chloride
Trichloroborane
(cylinder)

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CAS # 10294-34-5 BCl 3
RTECS # ED1925000 Molecular mass: 117.19
UN # 1741
EC # 005-002-00-5

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID /    FIRE FIGHTING   
FIRE Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.

NO water. In case of fire in the surroundings: powder, carbon dioxide.
EXPLOSION

In case of fire: cool cylinder by spraying with water but avoid contact of the substance with water.
EXPOSURE
AVOID ALL CONTACT!
IN ALL CASES CONSULT A DOCTOR!
Inhalation Sore throat. Cough. Burning sensation. Shortness of breath. Laboured breathing. Symptoms may be delayed (see Notes).
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Half-upright position. Artificial respiration if indicated. Refer for medical attention.
Skin Pain. Redness. Blisters. Skin burns. ON CONTACT WITH LIQUID: FROSTBITE.
Cold-insulating gloves. Protective clothing.
ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention.
Eyes Pain. Redness. Severe deep burns. Loss of vision.
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



SPILLAGE DISPOSAL PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Ventilation (extra personal protection: gas-tight chemical protection suit including self-contained breathing apparatus).
T+ Symbol
R: 14-26/28-34
S: 1/2-9-26-28-36/37/39-45
UN Hazard Class: 2.3
UN Subsidiary Risks: 8
Do not transport with food and feedstuffs.

EMERGENCY RESPONSE STORAGE

Fireproof if in building. Separated from food and feedstuffs. See Chemical Dangers.

IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
GAS OR COLOURLESS, FUMING LIQUID , WITH PUNGENT ODOUR.

PHYSICAL DANGERS:
The gas is heavier than air.

CHEMICAL DANGERS:
The substance decomposes on heating producing toxic and corrosive fumes including hydrogen chloride. Reacts violently with water or moist air to form hydrogen chloride and boric acid. Reacts violently with aniline, phosphine, alcohols, oxygen and organic matter such as grease. 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.

INHALATION RISK:
A harmful concentration of this gas in the air will be reached very quickly on loss of containment.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is corrosive to the eyes, the skin and the respiratory tract. Inhalation of the gas may cause lung oedema (see Notes). Rapid evaporation of the liquid may cause frostbite. Exposure at high levels may result in death. The effects may be delayed. Medical observation is indicated.


PHYSICAL PROPERTIES
Boiling point: 12.5°C
Melting point: -107°C
Relative density (water = 1): 1.35
Solubility in water: reaction
Vapour pressure, kPa at 20°C: 150
Relative vapour density (air = 1): 4.03
 

ENVIRONMENTAL DATA


NOTES
Reacts violently with fire extinguishing agents such as water. 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 is therefore essential. Immediate administration of an appropriate spray, by a doctor or a person authorized by him/her, should be considered.

IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission

© IPCS 1999
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.



Updated by AS. Approved by EC. Last update: 10.10.2000.