Tetrabutylammonium Bromide (TBAB)
Also known as: TBAB; Tetra-n-butylammonium bromide
Tetrabutylammonium Bromide (TBAB) is a quaternary ammonium salt used in chemical synthesis and as a phase-transfer reagent.
Product Overview
Tetrabutylammonium bromide (TBAB), CAS 1643-19-2, is a quaternary ammonium salt with the molecular formula C16H36BrN and a molecular weight of 322.37 g/mol. It is supplied as a white to off-white crystalline solid with a standard assay of ≥99.0%, and is used mainly as a phase-transfer catalyst in organic synthesis.
In two-phase reaction systems TBAB transfers anions from the aqueous or solid phase into the organic phase, which allows nucleophilic substitution, alkylation, oxidation and esterification to run under milder conditions than in a single phase. It is also used as an electrolyte and as a starting material for other tetraalkylammonium salts and ionic liquids in electrochemistry and materials research.
The material is not regulated as dangerous goods for transport, which keeps export documentation and shipping straightforward for international buyers.
Typical Applications
- Phase-transfer catalyst for nucleophilic substitution, alkylation, oxidation and esterification
- Electrolyte and supporting electrolyte for electrochemical and electro-organic synthesis
- Precursor for ionic liquids and other tetraalkylammonium salts
- Ion-pair reagent in analytical and materials research
Specifications
Values shown are typical for our standard grade. If you need a parameter that is not listed here, send us your specification and we will confirm availability.
| Appearance | White to off-white crystalline solid |
| Assay | ≥99.0% |
| Water (loss on drying) | ≤0.30% |
| Free amine | ≤0.04% |
| Residue on ignition | ≤0.05% |
Frequently Asked Questions
What is the CAS number of tetrabutylammonium bromide?
TBAB is CAS 1643-19-2.
What is the standard specification?
Assay ≥99.0%, water (loss on drying) ≤0.30%, free amine ≤0.04% and residue on ignition ≤0.05%. The full parameter list is shown in the specification table above.
Is TBAB classified as dangerous goods?
No. TBAB is not regulated as dangerous goods for transport.
What packaging do you supply?
Standard packing is 25 kg/bag. Custom packaging is available on request.
What are the HS code and shipping terms?
The HS code is 2923.90. We coordinate export under FOB, CIF, CIP, DDU and DDP terms.
Browse the full product range, or send us your requirement with specification, quantity and destination.
Appearance Picture
Molecular Formula
Package Photo
Package Details
- Standard packing: 25 kg/bag
- Custom packaging available on request
Storage & Notes
Store in a cool, dry, well-ventilated place. Keep containers tightly closed and protected from moisture and light.
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