Acetylene tetrabromide
Tetrabromoacetylene
sym-Tetrabromoethane
C2H2Br4 / Br2CHCHBr2
Molecular mass: 345.7
ICSC # 1235
CAS # 79-27-6
RTECS # KI8225000
UN # 2504
EC # 602-016-00-9
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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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Combustible.
Gives off irritating or toxic fumes (or gases) in a fire.
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NO open flames.
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Powder, water spray, foam, carbon dioxide.
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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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Cough.
Sore throat.
Headache.
Dizziness.
Nausea.
Abdominal pain.
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Ventilation, local exhaust, or breathing protection.
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Fresh air, rest.
Refer for medical attention.
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•Skin
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Redness.
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Protective gloves.
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Remove contaminated clothes.
Rinse and then wash skin with water and soap.
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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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(See Inhalation).
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Do not eat, drink, or smoke during work.
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Rinse mouth.
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 containers as far as possible.
Absorb remaining liquid in dry sand or inert absorbent and remove to safe place.
Do NOT let this chemical enter the environment.
Personal protection: self-contained breathing apparatus.
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Separated from
strong oxidants,
strong bases,
food and feedstuffs
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Well closed.
Ventilation along the floor.
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Do not transport with food and feedstuffs.
T+ symbol
R: 26-36-52/53
S: 1/2-24-27-45-61
UN Hazard Class: 6.1
UN Packing Group: III
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Important Data
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Physical State; Appearance:
YELLOW, HEAVY LIQUID
, WITH PUNGENT ODOUR.
Physical Dangers:
Chemical Dangers:
The substance decomposes
on burning
producing toxic and corrosive fumes including carbonyl bromide, hydrogen bromide.
Reacts
with
strong bases
and
strong oxidants
.
Attacks some metals such as aluminium, magnesium and zinc, and some plastics, rubber and coatings.
Occupational Exposure Limits:
TLV: (inhalable fraction & vapour) 0.1 ppm as TWA; (ACGIH 2008).
MAK: IIb (not established but data is available); (DFG 2008).
OSHA PEL: TWA 1 ppm (14 mg/m3)
NIOSH REL: See Appendix D
NIOSH IDLH: 8 ppm See: 79276
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its vapour
and
by ingestion.
Inhalation Risk:
A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
The substance
is irritating to
the eyes
,
the skin
and
the respiratory tract
.
The substance may cause effects on the
central nervous system
and
liver
, resulting in
impaired functions
.
Effects of Long-Term or Repeated Exposure:
The substance may have effects on the
liver
.
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Physical
Properties
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Boiling point: 243.5°C
Melting point: 0°C
Relative density (water = 1): 2.96
Solubility in water:
none
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Vapour pressure, Pa at 24°C: 5.32
Relative vapour density (air = 1): 11.9
Auto-ignition temperature: 335°C
Octanol/water partition coefficient as log Pow: 2.8
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Environmental
Data
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The substance is harmful to aquatic organisms.
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N O T E S
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Muthmann's liquid is another synonym.
Transport Emergency Card: TEC (R)-61GT1-III
NFPA Code: H3; F0; R1;
Card has been partially updated in February 2009: see Occupational Exposure Limits.
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ADDITIONAL INFORMATION
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ICSC: 1235
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1,1,2,2-TETRABROMOETHANE
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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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