[2] In addition to being cheap, tetrabutylammonium bromide is also environmentally friendly, has a greater degree of selectivity, is operationally simple, non-corrosive, and can be recycled easily as well.

[5] Tetrabutylammonium bromide can be prepared by the alkylation of tributylamine with 1-bromobutane.

[6] It serves as a source of bromide ions for substitution reactions.

As its melting point is just over 100 °C and decreases in the presence of other reagents, it can be considered an ionic liquid.

[2] TBAB is being extensively studied as a thermodynamic promoter in the formation of semi-clathrate hydrates which greatly brings down the pressure - temperature requirement for forming gas hydrates.