ICSC 0616 - BORON TRICHLORIDE

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BORON TRICHLORIDE	ICSC: 0616 (July 1997)
Boron chloride Trichloroborane

CAS #: 10294-34-5

UN #: 1741

EC Number: 233-658-4

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.		NO water. 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	Sore throat. Cough. Burning sensation. Shortness of breath. Laboured breathing. Symptoms may be delayed. See Notes.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Half-upright position. Artificial respiration may be needed. 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.	Wear 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

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Evacuate danger area! Consult an expert! Ventilation. Personal protection: gas-tight chemical protection suit including self-contained breathing apparatus.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 2.3; UN Subsidiary Risks: 8
STORAGE
Fireproof if in building. Separated from food and feedstuffs. See Chemical Dangers.
PACKAGING
Do not transport with food and feedstuffs.

BORON TRICHLORIDE

ICSC: 0616

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance GAS OR COLOURLESS FUMING LIQUID WITH PUNGENT ODOUR. Physical dangers The gas is heavier than air. Chemical dangers Decomposes on heating. This produces toxic and corrosive fumes including hydrogen chloride. Reacts violently with water and moist air. This produces hydrogen chloride and boric acid. Reacts violently with aniline, phosphine, alcohols, oxygen and organic matter such as grease. Attacks many metals in the presence of water.	Formula: BCl₃ Molecular mass: 117.19 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

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
GAS OR COLOURLESS FUMING LIQUID WITH PUNGENT ODOUR.

Physical dangers
The gas is heavier than air.

Chemical dangers
Decomposes on heating. This produces toxic and corrosive fumes including hydrogen chloride. Reacts violently with water and moist air. This produces hydrogen chloride and boric acid. Reacts violently with aniline, phosphine, alcohols, oxygen and organic matter such as grease. Attacks many metals in the presence of water.

Formula: BCl₃
Molecular mass: 117.19
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

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. Exposure at high levels could cause death. The effects may be delayed. Medical observation is indicated.	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. Exposure at high levels could cause death. The effects may be delayed. Medical observation is indicated.

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: (ceiling value): 0.7 ppm as STEL

ENVIRONMENT

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 are therefore essential. Immediate administration of an appropriate spray, by a doctor or a person authorized by him/her, should be considered.

ADDITIONAL INFORMATION

EC Classification
Symbol: T+; R: 14-26/28-34; S: (1/2)-9-26-28-36/37/39-45

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