Tetrabutylammonium bromide is a white crystal, deliquescence. 118 ℃ melting point. Soluble in water, alcohol, ether and acetone, slightly soluble in benzene.

Tetrabutylammonium Bromide is used in the synthesis of polymer solar cells. Also used in the synthesis of single component green-light emitting electrochemical cells.

The acute oral LD50 (mouse): 590mg/kg. Inhalation, ingestion and skin contact toxic to the skin, eyes and respiratory system irritation.