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Product Name: Tetraethylammonium Bromide
Synonyms: TEAB, Ethanaminium, N,N,N-Triethyl-, bromide
CAS Number: 71-91-0
UN Number: Not classified as dangerous goods
Manufacturer: Chemical suppliers and research distributors in North America and international markets
Recommended Use: Laboratory research, chemical synthesis, pharmaceutical intermediate
Emergency Phone: Refer to supplier’s emergency contact or local poison control
GHS Classification: Acute toxicity (oral), Category 4
Signal Word: Warning
Hazard Statements: Harmful if swallowed. May cause eye, skin, and respiratory irritation. Dust may aggravate pre-existing respiratory conditions. Environmental risks possible with significant spill.
Precautionary Statements: Avoid breathing dust. Use only with adequate ventilation. Wash hands thoroughly after handling. Wear protective gloves, protective clothing, eye protection, and face protection.
Chemical Name: Tetraethylammonium Bromide
Common Name: TEAB
Formula: C8H20BrN
Molecular Weight: 210.16 g/mol
Concentration: 98-100% pure material
Impurities: Trace organics or residual solvents possible in technical grades
Inhalation: Move the exposed person to fresh air without delay. Give artificial respiration if breathing has stopped. Call medical help if symptoms develop.
Skin Contact: Remove contaminated clothing. Rinse skin thoroughly with plenty of water for several minutes. Seek medical advice if irritation develops.
Eye Contact: Rinse immediately under running water for at least 15 minutes, lifting eyelids to ensure thorough flushing. Remove contact lenses if present.
Ingestion: Rinse mouth with water. Never try to induce vomiting in an unconscious person. Seek immediate medical attention and provide the label or safety data.
Suitable Extinguishers: Water spray, alcohol-resistant foam, dry chemical, or carbon dioxide extinguishers.
Hazardous Combustion: Emits toxic fumes such as hydrogen bromide, carbon oxides, and nitrogen oxides under fire conditions.
Fire-Fighter Protection: Wear full protective gear and self-contained breathing apparatus. Approach upwind to avoid toxic vapors.
Other Notes: Cool surrounding containers with water spray. Keep people away from and upwind of fire. Avoid water run-off contamination.
Personal Precautions: Evacuate area if needed. Avoid dust formation. Ensure proper ventilation. Don suitable gloves, eyewear, and respirator if handling significant releases.
Environmental Precautions: Prevent entry into drains, sewers, basements, and water bodies.
Spill Cleanup: Use inert absorbent—such as sand or vermiculite—for collection. Sweep up carefully and transfer to a suitable waste disposal container. Clean surface thoroughly with detergent and water.
Handling Advice: Avoid contact with skin, eyes, and clothing. Minimize dust and use in well-ventilated areas. Do not eat, drink, or smoke while handling.
Storage Requirements: Store in a tightly closed container in a cool, dry, and well-ventilated area. Keep away from incompatible materials, such as oxidizers and strong acids. Avoid direct sunlight and moisture exposure.
Recommended Storage Temperature: Room temperature (approx. 20–25°C) unless supplier advises otherwise.
Occupational Exposure Limits: No data available for TEAB itself; general dust limits apply (e.g., OSHA PEL for particulates not otherwise regulated: 15 mg/m³ total dust, 5 mg/m³ respirable fraction).
Engineering Controls: Use local exhaust ventilation or fume hoods to reduce airborne dust.
Personal Protective Equipment:
Eyes: Chemical safety goggles.
Skin: Chemical-resistant gloves (nitrile, neoprene).
Clothing: Lab coat or apron.
Respiratory: Approved respirators if handling bulk powder or spill cleanup without adequate ventilation.
Appearance: White or off-white crystalline solid
Odor: Essentially odorless
Melting Point: 285–290°C (decomposes)
Boiling Point: Not applicable (decomposes before boiling)
Density: About 1.4 g/cm³
Solubility: Easily dissolves in water, ethanol, methanol.
pH: Aqueous solutions typically near neutral
Vapor Pressure: No volatility under normal conditions
Partition Coefficient: No significant log Pow values reported
Other Properties: Nonflammable solid; forms dust when disturbed
Stability: Stable under recommended storage conditions.
Reactivity: Unreactive with most materials in routine conditions.
Hazardous Reactions: Contact with strong oxidizers or acids releases toxic vapors.
Decomposition Products: Hydrogen bromide, nitrogen oxides, carbon oxides upon strong heating or burning.
Conditions to Avoid: Excess heat, open flame, strong acids, and oxidants.
Acute Oral Toxicity: LD50 (rat) >350 mg/kg (moderate toxicity)
Inhalation: No data for inhalation toxicity; dust believed to be irritating to respiratory tract.
Skin and Eye Irritation: May cause mild to moderate skin and eye irritation.
Chronic Effects: No data on long-term effects in humans.
Carcinogenicity: Not classified as carcinogenic by IARC, NTP, ACGIH, or OSHA.
Additional Information: Not mutagenic or teratogenic in published animal studies.
Aquatic Toxicity: Harmful to aquatic organisms in larger quantities; no specific values in fish, daphnia, or algae.
Persistence and Degradability: No data on biodegradation rate.
Bioaccumulative Potential: Expected to have low bioaccumulation coefficient.
Mobility in Soil: High solubility means possible migration through soil with water.
Other Effects: Avoid release to surface water and soil environments.
Waste Disposal: Dispose of material in accordance with local, regional, and national regulations. Collect waste into clearly labeled containers.
Contaminated Packaging: Dispose of as hazardous waste. Triple rinse then offer for recycling or disposal by approved company.
Precautions: Do not pour into drains, waterways, or onto open ground.
UN Number: Not regulated under most global transport regulations
Proper Shipping Name: Tetraethylammonium Bromide
Transport Hazard Class: Not classified as dangerous for transport
Packing Group: None assigned
Environmental Hazards: Not classified as marine pollutant
Special Precautions: Avoid dust generation during handling and shipping; container should be securely closed
US TSCA: Listed
Canadian DSL/NDSL: Listed
European Union REACH: Not specifically listed on candidate list
Hazard Symbols: Harmful (Xn), Irritant (Xi)
GHS Label Elements: Exclamation mark
Other Regulatory Notes: Controlled use in pharmaceutical and chemical processing; users must follow all workplace and environmental controls per jurisdiction
