1. Gishirin ammonium na Quaternary mahadi ne da aka samar ta hanyar maye gurbin dukkan atom ɗin hydrogen guda huɗu a cikin ions na ammonium da ƙungiyoyin alkyl.

Su cationic surfactant ne masu kyawawan halayen kashe ƙwayoyin cuta, kuma ingantaccen ɓangaren aikin kashe ƙwayoyin cuta shine ƙungiyar cationic da aka samar ta hanyar haɗakar tushen halitta da ƙwayoyin nitrogen.
2. Tun daga shekarar 1935, lokacin da Jamusawa suka gano tasirin kashe ƙwayoyin cuta na alkyl dimethyl ammonium gasification, sun yi amfani da shi don magance kayan aikin soja don hana kamuwa da raunuka. Binciken kan kayan antibacterial na quaternary ammonium gishiri koyaushe ya kasance abin da masu bincike ke mayar da hankali a kai. Kayan antibacterial da aka shirya tare da gishirin ammonium na quaternary suna da kyawawan kaddarorin antibacterial kuma ana iya amfani da su sosai a fannoni da yawa kamar magani, maganin ruwa, da abinci.
3. Ayyukan gishirin ammonium na quaternary sun haɗa da:

Magungunan kashe ƙwayoyin cuta na noma, magungunan kashe ƙwayoyin cuta a wuraren jama'a, magungunan kashe ƙwayoyin cuta na ruwa, magungunan kashe ƙwayoyin cuta na kiwon kaji, magungunan kashe ƙwayoyin cuta na likitanci, magungunan kashe ƙwayoyin cuta na gida na dabbobi da kaji, magungunan kashe ƙwayoyin cuta na ja, magungunan kashe ƙwayoyin cuta na algae masu launin shuɗi-kore, da sauran filayen kashe ƙwayoyin cuta da kashe ƙwayoyin cuta. Musamman gishirin ammonium na Gemini quaternary suna da tasirin kashe ƙwayoyin cuta mai ban mamaki da ƙarancin farashi gaba ɗaya.

Tetrabutylammonium bromide (TBAB), wanda kuma aka sani da tetrabutylammonium bromide.

Gishirin halitta ne mai siffar kwayoyin halitta C ₁₆ H₃₆BrN.

Tsarkakken samfurin shine farin lu'ulu'u ko foda, mai ɗanɗano da ƙamshi na musamman. Yana da karko a zafin ɗaki da matsin lamba na yanayi. Yana narkewa a cikin ruwa, barasa, da acetone, yana narkewa kaɗan a cikin benzene.

CAna amfani da shi ne kawai a matsayin matsakaici a cikin haɗakar kwayoyin halitta, mai haɓaka canjin lokaci, da kuma haɗin ion pair.