1. ʻO nā paʻakai ammonium Quaternary nā pūhui i hana ʻia ma ka hoʻololi ʻana i nā ʻātoma hydrogen ʻehā i loko o nā iona ammonium me nā hui alkyl.

He surfactant cationic lākou me nā waiwai bactericidal maikaʻi loa, a ʻo ka ʻāpana kūpono o kā lākou hana bactericidal ʻo ia ka hui cationic i hoʻokumu ʻia e ka hui ʻana o nā aʻa kūlohelohe a me nā atom nitrogen.
2. Mai ka makahiki 1935, i ka wā i ʻike ai ka poʻe Kelemania i ka hopena bactericidal o ka alkyl dimethyl ammonium gasification, ua hoʻohana lākou ia mea no ka mālama ʻana i nā ʻaʻahu koa e pale ai i ka maʻi ʻeha. ʻO ka noiʻi ʻana e pili ana i ka quaternary ammonium paʻakai antibacterial mea i manaʻo nui ʻia e ka poʻe noiʻi. ʻO nā mea antibacterial i hoʻomākaukau ʻia me nā paʻakai ammonium quaternary he mau waiwai antibacterial maikaʻi a hiki ke hoʻohana nui ʻia i nā kula he nui e like me ka lāʻau lapaʻau, ka mālama wai, a me ka meaʻai.
3. ʻO nā hana o nā paʻakai ammonium quaternary:

ʻO nā fungicides mahiʻai, nā mea hoʻomaʻemaʻe wahi ākea, nā disinfectants wai kaʻapuni, nā disinfectants aquaculture, nā lāʻau lapaʻau lapaʻau, nā holoholona a me nā hale moa, nā disinfectants ʻulaʻula, nā disinfectants blue-green algae, a me nā kahua sterilization a me ka disinfection. Loaʻa i nā paʻakai ammonium quaternary Gemini nā hopena bactericidal koʻikoʻi a me nā kumukūʻai haʻahaʻa.

Tetrabutylammonium bromide(TBAB), i ʻike ʻia ʻo tetrabutylammonium bromide.

He paʻakai olaola me ke ʻano mole mole C ₁₆ H₃₆ʻO BrN.

ʻO ka huahana maʻemaʻe he aniani keʻokeʻo a i ʻole ka pauka, me ka deliquescence a me kahi ʻala kūikawā. Paʻa ma ka lumi wela a me ke kaomi lewa. Hiki ke hoʻoheheʻe ʻia i ka wai, ka waiʻona, a me ka acetone, hiki ke hoʻoheheʻe ʻia i loko o ka benzene.

Choʻohana pinepine ʻia ma ke ʻano he mea waena i ka synthesis organik, ka hoʻololi ʻana i ka ʻāpana, a me ka reagent pālua.