1. Umunyu wa ammonium wa quaternary ni ibintu bigizwe no gusimbuza atome enye za hydrogen muri iyoni za ammonium n'amatsinda ya alkyl.

Ni igikoresho cya cationic surfactant gifite ubushobozi bwiza bwo kwica bagiteri, kandi igice cyiza cy'imikorere yacyo yo kwica bagiteri ni itsinda rya cationic rigizwe no guhuza imizi y'ibinyabuzima na atome za azote.
2. Kuva mu 1935, ubwo Abadage bavumburaga ingaruka zo kwica bagiteri za alkyl dimethyl ammonium gasification, bayikoresheje mu kuvura imyenda ya gisirikare kugira ngo hirindwe kwandura ibikomere. Ubushakashatsi ku bikoresho birwanya bagiteri bya quaternary ammonium umunyu bwagiye bukorwa n'abashakashatsi. Ibikoresho birwanya bagiteri byateguwe mu munyu wa quaternary ammonium bifite ubushobozi bwiza bwo kurwanya bagiteri kandi bishobora gukoreshwa cyane mu nzego nyinshi nko mu buvuzi, mu kuvura amazi no mu biribwa.
3. Imirimo y'umunyu wa ammonium wa quaternary irimo:

Imiti yica udukoko mu buhinzi, imiti yica udukoko mu ruhame, imiti yica udukoko mu mazi, imiti yica udukoko mu bworozi bw’amafi, imiti yica udukoko mu buvuzi, imiti yica udukoko mu matungo n’inkoko, imiti yica udukoko mu mazi atukura, imiti yica udukoko mu bwoko bwa algae, n’indi miti yo gukaraba no kwica udukoko. Cyane cyane umunyu wa ammonium wa Gemini ufite ingaruka nziza zo kwica udukoko kandi ukaba uhendutse muri rusange.

Tetrabutylammonium bromide (TBAB), izwi kandi nka tetrabutylammonium bromide.

Ni umunyu w’umwimerere ufite formula ya molekile C ₁₆ H₃₆BrN.

Igicuruzwa cyuzuye ni kristu yera cyangwa ifu, ifite ubushyuhe n'impumuro yihariye. Irakomera iyo ubushyuhe bw'icyumba n'umuvuduko w'ikirere. Irashonga mu mazi, alcool, na acetone, irashonga gato muri benzene.

Cikoreshwa gusa nk'igice cy'ingenzi mu guhuza imikorere y'ibinyabuzima, catalyst yo kohereza icyiciro, na reagent ya ion pair.