Tetrabutylammonium Fluoride CAS 429-41-4

1. Tetrabutylammonium fluoride (TBAF) is widely utilized as a powerful reagent in organic synthesis, particularly for the deprotection of silyl groups (Si-O, Si-C) and N-sulfonyl groups under mild reaction conditions with high yields .
2. Tetrabutylammonium fluoride CAS 429-41-4 serves as an effective fluorinating agent in nucleophilic substitution reactions, enabling the introduction of fluorine into organic molecules by replacing halogens or nitro groups, which is valuable in pharmaceuticals and agrochemicals .
3. Tetrabutylammonium fluoride is employed as a phase transfer catalyst and as an activator in cross-coupling reactions such as the palladium-catalyzed coupling of terminal alkynes with aryl halides, facilitating the synthesis of arylated alkynes .
4. In analytical and polymer chemistry, TBAF acts as an electrolyte in lithium-ion batteries and as a catalyst in polymerization processes for producing fluorinated polymers with enhanced chemical resistance and thermal stability .

1. Tetrabutylammonium fluoride is highly hygroscopic and moisture-sensitive; it must be stored in a tightly sealed container under inert atmosphere (nitrogen or argon) in a cool, dry, and well-ventilated environment at 2-8°C or at room temperature in sealed packaging .
2. Tetrabutylammonium fluoride CAS 429-41-4 is classified with GHS signal word "Danger" and hazard statements H314 (Causes severe skin burns and eye damage), H225 (Highly flammable liquid and vapor for THF solutions), and may cause respiratory irritation (H335) .
3. Personnel must wear chemical-resistant gloves (nitrile rubber), tightly fitting safety goggles with side-shields, face protection, and flame retardant antistatic protective clothing when handling this substance, ensuring adequate ventilation in work areas .
4. Keep away from heat, sparks, open flames, and incompatible materials such as strong oxidizing agents, strong acids, and strong bases; THF solutions are highly flammable (flash point -17°C) and may form explosive peroxides upon prolonged exposure to air .

1. Isolate the spill area immediately, ensure adequate ventilation, remove all sources of ignition, and wear full personal protective equipment including self-contained breathing apparatus (SCBA) when Tetrabutylammonium fluoride is released .
2. Contain and collect Tetrabutylammonium fluoride CAS 429-41-4 using non-sparking tools and inert absorbent materials such as sand, diatomite, or universal binders; for THF solutions, use explosion-proof equipment and avoid creating vapors or mists .
3. Avoid creating dust or vapor clouds during cleanup to prevent respiratory exposure; decontaminate surfaces and equipment by scrubbing with alcohol; do NOT allow the product to enter drains or water courses .
4. Dispose of collected material as hazardous waste according to local, state, and federal environmental regulations through licensed chemical destruction or controlled incineration with flue gas scrubbing .

1. Tetrabutylammonium fluoride in THF solution is highly flammable with a flash point ranging from -17°C to 1°F (approx. -17°C) and vapor pressure that can form explosive mixtures with air; the solid form has an NFPA health rating of 3 (short exposure could cause serious injury) .
2. Use dry chemical powder, carbon dioxide (CO₂), alcohol-resistant foam, or water spray to extinguish fires involving the product; do NOT use a direct water jet as Tetrabutylammonium fluoride CAS 429-41-4 may scatter burning material and spread the fire .
3. Firefighters should wear self-contained breathing apparatus in pressure-demand, MSHA/NIOSH approved, and full protective gear when handling burning Tetrabutylammonium fluoride due to hazardous decomposition gases generated by thermal decomposition .
4. Hazardous decomposition products formed under fire conditions include toxic fumes of carbon monoxide, carbon dioxide, nitrogen oxides (NOx), and hydrogen fluoride; contain fire runoff to prevent environmental contamination and pollution .