Methylene bromide
Methylene dibromide
CH2Br2
Molecular mass: 173.8
ICSC # 0354
CAS # 74-95-3
RTECS # PA7350000
UN # 2664
EC # 602-003-00-8
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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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In case of fire: keep drums, etc., cool by spraying with water.
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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.
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Ventilation, local exhaust, or breathing protection.
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Fresh air, rest.
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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Rinse mouth.
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 and spilled liquid in sealable, non-aluminium containers as far as possible.
Absorb remaining liquid in sand or inert absorbent and remove to safe place.
Do NOT wash away into sewer.
Personal protection: A
filter respirator for organic gases and vapours.
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Separated from
food and feedstuffs
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Ventilation along the floor.
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Do not transport with food and feedstuffs.
Xn symbol
R: 20-52/53
S: 2-24-61
UN Hazard Class: 6.1
UN Packing Group: III
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Important Data
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Physical State; Appearance:
COLOURLESS LIQUID.
Physical Dangers:
The vapour is heavier than air.
Chemical Dangers:
The substance decomposes
on heating,
on burning
or
on contact with hot surfaces
producing toxic
and
irritating fumes
including
hydrogen bromide
.
Occupational Exposure Limits:
TLV not established.
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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 very quickly on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
The substance may cause effects on the
nervous system
and
blood
, resulting in impaired functions and formation of carboxyhaemoglobinemia.
Exposure could cause lowering of consciousness.
Effects of Long-Term or Repeated Exposure:
The liquid defats the skin.
The substance may have effects on the liver and kidneys.
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Physical
Properties
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Boiling point: 97°C
Melting point: -52.7°C
Relative density (water = 1): 2.5
Solubility in water, g/100 ml at 15°C: 1.2
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Vapour pressure, kPa at 20°C: 5
Relative vapour density (air = 1): 6.0
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.25
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Environmental
Data
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N O T E S
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Do NOT use in the vicinity of a fire or a hot surface, or during welding.
Card has been partly updated in October 2005. See sections Occupational Exposure Limits, EU classification, Emergency Response.
Transport Emergency Card: TEC (R)-61GT1-III
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ADDITIONAL INFORMATION
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ICSC: 0354
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DIBROMOMETHANE
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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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