Chemical name: Tetrabutylammonium Bromide
CAS number: 1643-19-2

product sheet

Description and features
Catonium TBAB (Tetrabutylammonium Bromide) is a white powder, its chemical formula is C16H36BrN. TBAB is a quaternary ammonium salt and is one of the most widely used phase transfer catalysts. It finds its application in pharmaceuticals, herbicides, polymers, powder coatings and zeolites. This material is highly soluble in water and methanol.

Tetrabutylammonium Bromide is also known as TBAB, IPC-TBA and N,N,N-tributylbutan-1-aminium bromide.

Product information

CAS number1643-19-2
EC number 216-699-2
HS code2923 90 00

Molecular and structural information

Molecular formulaC16H36BrN
Molecular weight322.37 g/mol
Smiles notation[Br-].CCCC[N+](CCCC)(CCCC)CCCC
Structural formula:1643-19-2


AppearanceWhite crystal powder
Assay≥96.00 %
Melting Point100 – 104 °C
Free Ammonium≤0.20 %
Water content≤0.40 %
Loss on drying≤0.50 %
Sio2≤3.00 %
Ash≤0.20 %

Physicochemical information

Bulk density644 kg/m3 (35 ºC)
Flash point100 ºC @ 960 hPa
Melting point96.70 ºC @ 960 hPa
Partition coefficient (log Pow)1.7115
pH value6.48 @ 30 ºC
Solubility in methanol100% @ 35ºC
Solubility in water1000 g/l @ 35ºC
Vapour pressure 0.000000000796 mm Hg

CatOnium TBAB (Tetrabutylammonium Bromide) is being used in: (powder) coatings, (fluoro)elastomers, herbicides, (powder coating) resins, and zeolites.

Available packaging: 20 / 25 KG carton drums
Special packaging is available on request

Shipment Info
Europe and United States: Provided CatOnium TBAB is on stock in our local warehouses our lead time is about one week if delivered in 25 KG drums.
Canada, South America, South Africa and other markets can also be served, please contact our sales department for more details.

Store Tetrabutylammonium Bromide in a cool, dry and well-ventilated area and in line with legal requirements.
Keep TBAB away from heat sources and oxidizing agents.

This substance (CAS: 1643-19-2) has been pre-registered under REACH (EC) 1907/2006.

A Material Safety Data Sheets (MSDS) is available for CatOnium TBAB and all other products supplied by Vesta Intracon BV. An MSDS describes the hazards of a product and explains how a product can be safely handled, used and stored. Besides it provides important regulatory and emergency response information for the purchased product.

Tetrabutylammonium Bromide : Disclaimer. This information is supplied solely for informational purposes and Vesta Intracon bv makes no guarantees or warranties, either expressed or implied, with respect to the accuracy and use of this data. All product warranties and guarantees shall be governed by the Standard Terms of Sale. Nothing in this document is legal advice or is a substitute for competent legal advice.