ICSC 1419 - DIBROMODIFLUOROMETHANE

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DIBROMODIFLUOROMETHANE	ICSC: 1419 (November 2003)
Difluorodibromomethane Fluorocarbon 12-B2

CAS #: 75-61-6

UN #: 1941

EC Number: 200-885-5

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.		In case of fire in the surroundings, use appropriate extinguishing media.


	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Sore throat. Laboured breathing. Shortness of breath. Confusion. Drowsiness. Unconsciousness.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention. See Notes.
Skin		Protective gloves.	Rinse and then wash skin with water and soap.
Eyes		Wear safety spectacles.	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
Ventilation. Do NOT let this chemical enter the environment.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 9; UN Pack Group: III
STORAGE
See Chemical Dangers.
PACKAGING

DIBROMODIFLUOROMETHANE

ICSC: 1419

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS GAS OR LIQUID WITH CHARACTERISTIC ODOUR. Physical dangers The gas is heavier than air and may accumulate in lowered spaces causing a deficiency of oxygen. Chemical dangers Decomposes on contact with hot surfaces or flames. This produces toxic and corrosive gases including hydrogen bromide and hydrogen fluoride. Reacts with alkali metals, powdered aluminium, magnesium and zinc.	Formula: CBr₂F₂ Molecular mass: 209.8 Boiling point: 22.8°C Melting point: -101.1°C Density (gas): 8.7 kg/m³ Density (for liquid): 2.27 g/cm³ Solubility in water: none Vapour pressure, kPa at 20°C: 83 Relative vapour density (air = 1): 7.2 Octanol/water partition coefficient as log Pow: 1.99

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS GAS OR LIQUID WITH CHARACTERISTIC ODOUR.

Physical dangers
The gas is heavier than air and may accumulate in lowered spaces causing a deficiency of oxygen.

Chemical dangers
Decomposes on contact with hot surfaces or flames. This produces toxic and corrosive gases including hydrogen bromide and hydrogen fluoride. Reacts with alkali metals, powdered aluminium, magnesium and zinc.

Formula: CBr₂F₂
Molecular mass: 209.8
Boiling point: 22.8°C
Melting point: -101.1°C
Density (gas): 8.7 kg/m³
Density (for liquid): 2.27 g/cm³
Solubility in water: none
Vapour pressure, kPa at 20°C: 83
Relative vapour density (air = 1): 7.2
Octanol/water partition coefficient as log Pow: 1.99

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation. Effects of short-term exposure The substance is irritating to the respiratory tract. Inhalation of high levels may cause lung oedema. See Notes. The substance may cause effects on the central nervous system. Exposure could cause lowering of consciousness.	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 irritating to the respiratory tract. Inhalation of high levels may cause lung oedema. See Notes. The substance may cause effects on the central nervous system. Exposure could cause lowering of consciousness.

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: 100 ppm as TWA

ENVIRONMENT
Avoid release to the environment because of its impact on the ozone layer.

NOTES
Check oxygen content before entering area. 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. Chlorofluorocarbons are known to cause effect on the cardiovascular system.

ADDITIONAL INFORMATION

EC Classification

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