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DIBROMODIFLUOROMETHANE ICSC: 1419
Date of Peer Review: November 2003

Difluorodibromomethane
Fluorocarbon 12-B2
CAS # 75-61-6 CBr2F2
RTECS # PA7525000 Molecular mass: 209.8
UN # 1941
EC #
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.

In case of fire in the surroundings: use appropriate extinguishing media.
EXPLOSION


EXPOSURE


Inhalation Cough. Sore throat. Laboured breathing. Shortness of breath. Confusion. Drowsiness. Unconsciousness.
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
Safety spectacles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion
Do not eat, drink, or smoke during work.

SPILLAGE DISPOSAL PACKAGING & LABELLING
Ventilation. Do NOT let this chemical enter the environment.
EU Classification
UN Classification
UN Hazard Class: 9
UN Pack Group: III
EMERGENCY RESPONSE STORAGE

See Chemical Dangers.
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 1999

SEE IMPORTANT INFORMATION ON BACK


DIBROMODIFLUOROMETHANE ICSC: 1419
IMPORTANT DATA
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:
The substance decomposes on contact with hot surfaces or flames producing toxic and corrosive gases including hydrogen bromide, hydrogen fluoride. Reacts with alkali metals, powdered aluminium, magnesium and zinc.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 100 ppm as TWA; (ACGIH 2003).
MAK: 100 ppm, 870 mg/m; Peak limitation category: II(2); (DFG 2003).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation.

INHALATION RISK:
On loss of containment, a harmful concentration of this gas in the air will be reached very quickly.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is irritating to the respiratory tract. Inhalation of the substance at high levels may cause lung oedema (see Notes). The substance may cause effects on the central nervous system. Exposure could cause lowering of consciousness.

PHYSICAL PROPERTIES
Boiling point: 22.8C
Melting point: -101.1C
Density: 8.7 kg/m (for gas)
Density: 2.27 g/cm (for liquid)
Solubility in water: none
Vapour pressure, kPa at 20C: 83
Relative vapour density (air = 1): 7.2
Octanol/water partition coefficient as log Pow: 1.99
ENVIRONMENTAL DATA
This substance may be hazardous in the environment; special attention should be given to 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 is therefore essential. Chlorofluorocarbons are known to cause effect on the cardiovascular system. Freon 12-B2 and Halon 1202 are trade names.
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 1999