Product Name: Tetraethylammonium Tetrafluoroborate
Synonyms: TEABF4, Ethanaminium, N,N,N-Triethyl-, tetrafluoroborate
Recommended Use: Laboratory research, Electrolyte in batteries
Supplier: Commercial chemical suppliers specializing in laboratory chemicals
Emergency Contact: Local Poison Control Center or supplier's dedicated emergency number
Classification: Acute Toxicity (Oral), Skin Corrosion/Irritation, Eye Damage, Specific Target Organ Toxicity
Signal Word: Warning
Hazard Statements: Causes irritation by contact with skin and eyes; harmful if swallowed; inhalation may cause respiratory symptoms
Pictograms: Exclamation mark
Precautionary Statements: Avoid breathing dust; use protective gloves and eye protection; wash hands thoroughly after handling
Routes of Exposure: Inhalation, ingestion, eye, and skin contact
Chemical Name: Tetraethylammonium Tetrafluoroborate
Common Name: TEABF4
CAS Number: 429-06-1
Molecular Formula: C8H20N.BF4
Concentration: 97–100% depending on supplier
Impurities: Trace amounts of related ammonium and boron compounds
Inhalation: Move person to fresh air; support breathing; seek medical attention for persistent symptoms
Skin Contact: Remove contaminated clothing; wash skin thoroughly with soap and water; get medical attention if irritation develops
Eye Contact: Rinse eyes cautiously with water for several minutes; remove contact lenses if present and easy to do; continue rinsing and seek medical help
Ingestion: Rinse mouth with water; seek immediate medical advice; do not induce vomiting unless directed by medical personnel
Suitable Extinguishing Media: Use water spray, carbon dioxide, dry chemical powder, or appropriate foam
Fire Hazards: May release toxic fumes of fluorine, boron oxides, and nitrogen compounds
Protective Equipment: Wear self-contained breathing apparatus and protective turnout clothing
Firefighting Tips: Avoid using high-pressure water jets; contain runoff to prevent environmental contamination; cool containers with water spray
Unusual Fire Hazards: Thermal decomposition produces hazardous vapors and fumes under intense heat
Personal Precautions: Evacuate personnel from affected area; use appropriate respiratory, skin, and eye protection
Environmental Precautions: Prevent further leakage; avoid material entering drains or natural waterways
Cleanup Methods: Sweep up and shovel material into suitable container for disposal; ventilate area and wash spill site after cleanup
Containment: Use inert absorbent materials to contain dust or spills; secure area until proper decontamination is complete
Handling: Use only in well-ventilated areas; minimize dust formation; avoid contact with eyes, skin, and clothing; do not eat, drink, or smoke during use; wash hands after handling
Storage Conditions: Store tightly sealed in a cool, dry place, away from sources of ignition, heat, and incompatible substances; recommended storage in original container with clear labeling
Compatibility: Keep away from acids, strong bases, oxidizing agents, and moisture
Packaging: Use containers that resist chemical corrosion, such as HDPE or borosilicate glass
Exposure Limits: No specific occupational exposure limits established; minimize exposure as a precaution
Engineering Controls: Operate within fume hood or use local exhaust ventilation to control airborne exposure
Personal Protective Equipment: Safety goggles, lab coat, chemical-resistant gloves (nitrile or neoprene), and respiratory protection in case of dust
Hygiene Measures: Shower and change clothing after working with the product; disinfect contaminated areas; do not reuse contaminated protective gear
Appearance: White, crystalline powder
Odor: Mild, ammoniacal odor
Odor Threshold: Not established
Melting Point: Around 278°C (decomposition reported above 300°C)
Boiling Point: No reliable data; decomposes before boiling
Solubility: Freely soluble in water, ethanol, methanol, and acetonitrile
pH (1% solution): Slightly acidic to neutral
Vapor Pressure: Not expected at ambient temperature
Density: 1.3–1.5 g/cm³
Flash Point: Not applicable
Autoignition: Not determined
Other Properties: Hygroscopic; forms clumps in humid air; electrochemically active
Chemical Stability: Stable under ambient temperature and recommended storage conditions
Reactivity: Reacts with strong acids and bases; incompatible with strong oxidizers
Conditions to Avoid: Heating above decomposition temperature, contact with moisture, exposure to flames
Products of Decomposition: Releases tetrafluoroboric acid, boron trifluoride, and nitrogen oxides at high temperatures
Polymerization: Not known to undergo hazardous polymerization
Acute Toxicity: Data lacking for human exposure; animal studies suggest moderate oral toxicity (LD50 values typically >500 mg/kg in rats)
Irritation: Can cause eye and skin irritation; irritating to respiratory tract
Chronic Effects: Prolonged exposure may impact central nervous system and kidneys
Sensitization: Not classified as skin sensitizer based on available studies
Mutagenicity/Carcinogenicity: No evidence for mutagenic or carcinogenic effects in available animal studies
Symptomatology: May include abdominal pain, shortness of breath, burning sensation on contact, redness at exposure sites
Ecotoxicity: No specific aquatic toxicity data; ammonium and fluoroborate ions may be toxic to aquatic organisms
Persistence and Degradability: Not readily biodegradable; persists in water and soils
Bioaccumulative Potential: Low potential for bioaccumulation, but may persist in environment
Mobility in Soil: High solubility increases migration risk; may affect groundwater
Other Adverse Effects: Discharges to environment should be avoided; low concentrations could disrupt microorganisms in aquatic systems
Waste Treatment Methods: Collect waste in clearly labeled, tightly sealed containers; dispose of through licensed hazardous waste contractor
Product Disposal: Do not release into drains, surface water, or soil; incinerate in a chemical incinerator equipped with afterburner and scrubber
Contaminated Packaging: Dispose of as hazardous waste; decontaminate or incinerate after use
Local Regulations: Comply with federal, state, and local hazardous waste disposal requirements at all times
UN Number: Not regulated for transport under international regulatory standards
Proper Shipping Name: Tetraethylammonium Tetrafluoroborate
Transport Hazard Class: Not classified as dangerous for road, rail, sea, or air transport
Packing Group: No assigned packing group
Special Precautions: Store in original packaging to limit leaks; prevent movement in transport; keep away from food and animal feed
TSCA Status: Listed in U.S. Toxic Substances Control Act inventory
REACH Registration: May require substance registration under European regulations
SARA Title III: Not listed as a hazardous chemical
California Proposition 65: Not listed as a substance known to cause cancer or reproductive toxicity
Other International Inventories: Checked with local regulations; restrictions may apply in some jurisdictions
Labeling Requirements: Appropriate hazard labeling per OSHA, GHS, and local code
