June, 2010
MSDS: ACETYLENE TETRABROMIDE
CHEMICAL DATA: Synonyms:1,1,,2,,2 -Tetrabromoethane; acetylene tetrabromide; TBE tetrabromoacetylene;
Muthmann's liquid
Chemical family: Brominated alkanes
Formula: C2H2Br4;CHBr2CHBr2
Molecular weight: 345.7
CAS RN: 79-27-6
INGREDIENTS: Tetrabromoethane - 100% (approximately)
PHYSICAL DATA: Boiling point: 119癈 at 15 mm Hg
150癈 at 50 mm Hg
Freezing point: -1?1癈
Vapor pressure: 0.02-0.1 mm Hg at 20癈
Vapor density: 11.9 (air = 1)
Solubility
in water: 0.063 g/100 at 20癈; 0.28 g/100 at 80癈
in other solvents: Miscible in all proportions with a number of well known organic
solvents like acetone, alcohol, benzene, carbon tetrachloride, chloform, etc.
Specific gravity: 2.96 at 25癈
Evaporation rate: >100 (ethyl ether = 1)
Decomposition: Decomposes at 239 -242癈 (760 mm Hg)
Appearance and odor: Colorless to yellowish liquid with sweet pungent odor.
FIRE AND EXPLOSION
HAZARD DATA: Flash point: Non-flammable
Autoignition temperature: 335癈
Flammable (explosive) limits: Non-flammable
Extinguishing media: Water, foam, fog, CO2 or dry chemical
Special fire fighting procedures: Provide fire-fighters with full protective clothes, impervious
gloves, boots and apron and self-contained breathing apparatus.
Unusual fire and explosion hazards: When heated, emits highly toxic fumes of bromine,
hydrogen bromide, and carbonyl bromide.
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HEALTH HAZARD DATA: Toxcity: LD50 (oral, rabbit) - 400 mg/kg
LD50 (oral,rat) - 1100 mg/kg
LD50 (dermal, rat) - 5250 mg/kg
Threshold limit value: Air: 1 ppm (14 mg/m3)
Effects of overexposure:
Eve contact: Mild irritant.
Skin contact: Moderate irritant
Skin absorption: Not likely to be absorbed in toxic amounts.
Mutagenicity: Positive in DNA repair system using Escherichia coli (10 mg/disc).
Emergency & first aid procedures:
Eye contact: Flush eyes promptly with plenty of water for at least 15 minutes. Get medical
attention immediately.
Skin contact: Remove all contaminated clothing including shoes. Wash skin thoroughly with mild
soap and plenty of water. If irritation persists, get medical attention. Wash clothing before re-use.
Inhalation: Remove person to fresh air. Place him in half upright position and keep him quiet and
warm. Apply artificial respiration if necessary and get medical attention.
Ingestion: If swallowed, give two glasses of water and induce vomiting. Get medical attention
immediately. Do not induce vomiting or give liquids when person is unconscious.
Note to physician: Treat symptomatically - no known antidote.
REACTIVITY DATA: Stability: Stable under normal conditions. Decomposes slowly at 50癈.
Conditions to avoid: High temperatures.
Incompatibility: Reacts with chemically active metals or strong caustics. In the presence of steam,
contact with hot iron, aluminum, and zinc may cause formation of toxic vapors. Softens or
destroys most plastics and rubbers.
Hazardous decomposition products: Upon heating to decomposition, irritant, toxic hydrogen
bromide, bromine, and carbonyl bromide fumes may evolve.
Hazardous polymerization:Will not occur.
SPILL OR LEAK
PROCEDURES: Steps to be taken in case material is released or spilled: Instruct others to keep at a safe
distance. Wear breathing apparatus and gloves. Contain large spills by diking. Pump as much as
possible into drums. Absorb the rest with earth, sand or sawdust; flush area with water. Prevent
liquid from entering sewers.
Waste disposal method: Salvage if possible. Bury in an approved landfill. Keep out of water
supplies. If this is not practical, rinse drums with a flammable TBE miscible solvent. Add
resulting mixture in small portions to a furnace equipped with a good scrubbing system to contain
toxic gases such as bromine, HBr and carbonyl bromide which evolve at high temperatures.
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SPECIAL PROTECTION INFORMATION:
Ventilation requirements: Sufficient to control to TLV.
Protective equipment
Eyes: Safety glasses
Gloves: Impervious gloves
Respirator: Minor leaks - full face gas mask and organic canister.
Major leaks - contained breathing apparatus or an air supplied hood.
Clothing: Clean, full body-protecting clothes, boots and apron.
Other protective equipment: Eye fountain and safety shower near work area.
SPECIAL PRECAUTIONS:
Precautions to be taken in handling and storage: Use gloves and eye protection when handling;
avoid inhalation of vapor above threshold limit value.
REGULATION INFORMATION:
Transportation:
IMO: Class 6.1 - Poisons; label no. 6, HARMFUL - Stow Away From Foodstuffs;
Packaging group: III (IMDG CODE - Page 6008-1, amendment 18-79)
RID/ADR:
6.1/62B
UN No.: 2504
Reported in EPA TSCA Inventory, 1983.
LIsted in EPA Genetic Toxicology Program,1984.
Not listed in NTP.
DOT Classification:
ORM-A
The information herein is true and accurate to the best of our knowledge. No warranty or guarantee is expressed
or implied in this data. It is the user's responsibility to determine the suitability for his own use of the products
described within. Nothing shall constitute permission, inducement or recommendation to practice any invention
covered by and patent owned by Geoliquids, Inc. or by others, nor as a recommendation to use and product or to
practice any process in violation of any law or government regulation.
This material is supplied for use in laboratories with proper ventilation by skilled people only.
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