Chlorobromomethane
Methylene chlorobromide
CH2BrCl
Molecular mass: 129.4
ICSC # 0392
CAS # 74-97-5
RTECS # PA5250000
UN # 1887
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Not combustible.
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In case of fire in the surroundings: use appropriate extinguishing media.
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Explosion
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Exposure
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PREVENT GENERATION OF MISTS!
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•Inhalation
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Dizziness.
Drowsiness.
Headache.
Nausea.
Unconsciousness.
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Ventilation, local exhaust, or breathing protection.
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Fresh air, rest.
Half-upright position.
Artificial respiration may be needed.
Refer for medical attention.
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•Skin
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Dry skin.
Redness.
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Protective gloves.
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Remove contaminated clothes.
Rinse skin with plenty of water or shower.
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•Eyes
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Redness.
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Safety spectacles
or
eye protection in combination with breathing protection.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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(Further see Inhalation).
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Do not eat, drink, or smoke during work.
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Do NOT induce vomiting.
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Collect leaking liquid in sealable containers.
Absorb remaining liquid in sand or inert absorbent and remove to safe place.
Do NOT wash away into sewer,
then remove to safe place.
Personal protection: A
filter respirator for organic gases and vapours.
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Separated from
food and feedstuffs
.
Dry.
Ventilation along the floor.
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Do not transport with food and feedstuffs.
UN Hazard Class: 6.1
UN Packing Group: III
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Important Data
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Physical State; Appearance:
COLOURLESS
TO YELLOW
LIQUID
, WITH CHARACTERISTIC ODOUR.
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating
producing
toxic and corrosive fumes
including
hydrogen chloride
,
phosgene
,
hydrogen bromide
.
Attacks many metals including steel, aluminium, magnesium and zinc unless inhibited.
Occupational Exposure Limits:
TLV: 200 ppm as TWA; (ACGIH 2004).
MAK: skin absorption (H);
Carcinogen category: 3B;
(DFG 2004).
OSHA PEL: TWA 200 ppm (1050 mg/m3)
NIOSH REL: TWA 200 ppm (1050 mg/m3)
NIOSH IDLH: 2000 ppm See: 74975
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation.
Inhalation Risk:
A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
Inhalation of the substance may cause lung oedema (see Notes).
The substance may cause effects on the
central nervous system
and
blood
, resulting in impaired functions and formation of carboxyhaemoglobin.
Exposure may result in lowering of consciousness.
Effects of Long-Term or Repeated Exposure:
Repeated or prolonged contact with skin may cause dermatitis.
Lungs may be affected by repeated or prolonged exposure.
The substance may have effects on the
kidneys
and
liver
, resulting in
impaired functions
.
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Physical
Properties
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Boiling point: 68°C
Melting point: -88°C
Relative density (water = 1): 2.0
Solubility in water:
poor
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Vapour pressure, kPa at 20°C: 15.6
Relative vapour density (air = 1): 4.5
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Environmental
Data
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N O T E S
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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 inhalation therapy by a doctor or a person authorized by him/her, should be considered.
Halon 1011 is a trade name.
Card has been partly updated in October 2005. See sections Occupational Exposure Limits, Emergency Response.
Transport Emergency Card: TEC (R)-61GT1-III
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ADDITIONAL INFORMATION
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ICSC: 0392
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BROMOCHLOROMETHANE
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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