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Substance: Tetrabutylammonium Fluoride
Chemical Formula: C16H36FN
Common Forms: Typically found as a hydrate or in solution
Appearance: White to off-white solid
Odor: Faint ammoniacal scent
Main Risks: Corrosive to skin, eyes, and respiratory tract; risk of fluoride poisoning on contact or inhalation
Physical Hazards: Not particularly volatile, but can break down in presence of moisture to release toxic fluoride ions
Warning Symbols: Corrosive, Toxic
Long-term Hazards: Chronic exposure can damage bones and teeth; fluoride compounds do not mess around
Environmental Risks: Toxic to aquatic life, risk of persistence in water and soil
CAS Number: 429-41-4
Chemical Name: Tetrabutylammonium Fluoride
Main Component: Tetrabutylammonium Fluoride hydrate or anhydrous powder
Percentage: Usually between 95% and 99% active ingredient; rest is moisture or solvent
Eye Contact: Flush eyes with running water for at least 15 minutes, remove contacts, get medical help
Skin Contact: Remove contaminated clothes, rinse skin with water; treat with calcium gluconate gel if possible
Inhalation: Get out to fresh air, monitor breathing, seek medical help even if symptoms feel mild
Ingestion: Rinse mouth, drink water if conscious, do not induce vomiting—seek immediate medical attention
Fire Hazards: Material itself won't burn, but containers could rupture in heat, and decomposition releases toxic gases
Extinguishing Methods: Use CO2, dry chemical, or foam; avoid water spray
Protective Equipment: Full protective gear and self-contained breathing apparatus
Combustion Products: Toxic fumes like hydrogen fluoride, nitrogen oxides, carbon oxides
Personal Protection: Wear goggles, gloves, lab coats, use face shield if possible
Cleanup: Ventilate area, avoid raising dust, scoop up solid into closed containers, clean residues with damp cloth
Environmental Protection: Prevent runoff to drains, keep away from soil and water
Waste Disposal: Bag up for incineration or hazardous waste management, never mix with acids or oxidizers
Handling: Avoid contact with skin and eyes, keep containers tightly sealed, work in fume hoods
Precautions: Never pipette by mouth, wash hands after handling, do not eat or drink in work areas
Storage: Store in cool, dry, ventilated place, keep away from acids and moisture, use desiccator for long-term storage
Incompatibility: Strong acids, oxidizers, water (reacts to give toxic gas)
Engineering Controls: Use fume hoods, local exhaust
Respiratory Protection: Use NIOSH-approved respirators if ventilation is poor
Skin Protection: Wear nitrile or neoprene gloves; latex doesn't cut it here
Eye Protection: Chemical splash goggles or face shield
Other Protection: Long-sleeved clothing, closed shoes, have calcium gluconate accessible
Physical State: Crystalline powder, occasionally sticky if hydrated
Color: White to beige
Odor: Slight ammonia smell
Melting Point: Roughly 60–80°C, varies by hydrate content
Solubility: Freely soluble in polar solvents like water, methanol, DMSO
pH: Strongly basic in solution
Vapor Pressure: Negligible
Decomposition: Reacts in humid air to form caustic fluoride solutions
Stability: Stable under dry, cool conditions, but moisture causes decomposition
Incompatible Materials: Acids, oxidizers, water, strong reducing agents
Hazardous Reactions: In contact with acids forms toxic hydrogen fluoride gas
Decomposition Products: Fluoride ions, butylamine, hazardous organic and inorganic byproducts
Reactivity Notes: Always reacts more aggressively than most expect; storage and handling should err on the side of paranoia rather than routine
Acute Effects: Severe irritation to eyes, skin burns, respiratory tract irritation upon inhalation
Ingestion Risk: Even small amounts can cause life-threatening low calcium, bone problems, gastric distress
Delayed Effects: Kidney and liver effects, fluorosis with repeated exposure
Signs of Exposure: Nausea, headache, tremors, confusion; skin won't always show immediate pain even as deep burns develop
Aquatic Toxicity: Harmful to fish and aquatic life, can cause long-term damage in streams or ponds
Persistence: Fluoride ions can remain in groundwater and soil longer than most would guess
Bioaccumulation: Not major for the ammonium compound, but fluoride ions can build up in plants, bones, teeth of animals
Other Risks: Dumping in regular drains puts municipal treatment workers at risk
Waste Handling: Collect all residues, keep separate from acids and oxidizers
Disposal Methods: Use licensed hazardous waste processing; incinerate if possible with proper scrubbing of exhaust
Avoid: Do not dump down sinks or into the environment
Extra Steps: Neutralize fluoride with calcium salts if directed, but get professional input before mixing anything
UN Number: Chemicals like this generally move under special toxic hazard classes
Packaging: Leakproof, moisture-proof containers with clear hazard labeling; carriers require training in fluoride handling
Restrictions: Many countries and shippers require special paperwork and inspections, especially for large quantities
Workplace Safety Laws: Falls under chemical hygiene and hazardous substance regulations in most countries
Occupational Limits: OSHA, NIOSH, or equivalent agencies often set exposure limits for airborne fluoride
Environmental Restrictions: Bans on disposal in regular landfills, strict limits on wastewater fluoride levels
Right-to-Know: Many jurisdictions mandate hazard communication and training for workers
