Tetrabutylammonium Bromide (TBAB), CAS 1643-19-2, is also known as tetra-n-butylammonium bromide or Bu₄NBr. It is a quaternary ammonium salt used in phase-transfer catalysis and ion-pairing systems. For procurement review, confirm the intended phase-transfer or ion-pairing system, water requirement, and offered physical form, packaging, and applicable safety documentation.
Tetrabutylammonium Bromide (TBAB) CAS 1643-19-2
- CAS: 1643-19-2
- Synonyms: Tetrabutylammonium bromide; Tetra-n-butylammonium bromide; TBAB; Bu₄NBr
- Einecs: 216-699-2
- Molecular Formula: C₁₆H₃₆BrN
- Grade: Confirm current product specification
- Package: Confirm packaging for the offered form
Product Description
Product name: Tetrabutylammonium Bromide (TBAB)
CAS number: 1643-19-2
Molecular formula: C₁₆H₃₆BrN
Molecular weight: 322.37 g/mol
EC number: 216-699-2
Other names: Tetrabutylammonium bromide; Tetra-n-butylammonium bromide; TBAB; Bu₄NBr
Chemical class: a quaternary ammonium salt
Identity check: TBAB is the real industry abbreviation for tetrabutylammonium bromide.
Technical context: phase-transfer catalysis and ion-pairing systems
RFQ information: Before an RFQ, confirm the intended phase-transfer or ion-pairing system, water requirement, and offered physical form.
Offered form: Not specified; confirm the actual offered form.
FAQ - Technical & Supply Chain
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Q:
Are Tetrabutylammonium Bromide and TBAB the same substance?
A: Yes. TBAB is the common abbreviation for Tetrabutylammonium Bromide, CAS 1643-19-2, formula C₁₆H₃₆BrN. Do not confuse it with Tetrabutylammonium Chloride, Iodide or Hydrogen Sulfate. The counterion changes formula weight, halide content and process behavior, so purchase documents should state the full salt identity. -
Q:
Which specifications should be agreed for Tetrabutylammonium Bromide?
A: Set assay and method, water, free amine or related quaternary salts, bromide basis, color, pH where meaningful and residue or melting behavior as required. Moisture limits can be critical to phase-transfer and synthesis use. Compare the batch COA and actual test methods rather than assuming all nominal 99% grades are equivalent. -
Q:
How should bulk TBAB be packaged?
A: Specify crystalline powder, granule or solution form, net weight, moisture-barrier liner, closure and palletization. For solution grades, define solvent, concentration and density. Protect solid TBAB from humid air during sampling and charging, and agree particle-size or caking criteria when flow, dissolution or automatic dosing is important.
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