Amphoteric surfactants jerin Betaine amphoteric surfactants ne masu ƙarfi waɗanda ke ɗauke da ƙwayoyin N alkaline masu ƙarfi. Suna da gishiri tsaka tsaki tare da kewayon isoelectric mai faɗi. Suna nuna halayen dipole a cikin kewayon da yawa. Akwai shaidu da yawa da ke nuna cewa betaine surfactants suna wanzuwa a cikin nau'in gishirin ciki. Saboda haka, wani lokacin ana kiransa quaternary ammonium internal salt surfactant. Dangane da nau'ikan masu ɗaukar wutar lantarki daban-daban, ana iya raba betaine surfactants da aka ruwaito a cikin binciken na yanzu zuwa carboxyl betaine, sulfonic betaine, phosphoric betaine, da sauransu.

Amphoteric surfactants na jerin Betaine gishiri ne masu tsaka-tsaki tare da faɗin kewayon isoelectric. Suna nuna halayen dipole a cikin kewayon pH mai faɗi. Saboda kasancewar quaternary ammonium nitrogen a cikin ƙwayoyin, yawancin betaine surfactants suna da kyakkyawan kwanciyar hankali na sinadarai a cikin kafofin acidic da alkaline. Muddin kwayar halittar ba ta ƙunshi ƙungiyoyi masu aiki kamar haɗin ether da haɗin ester ba, gabaɗaya tana da kyakkyawan juriya ga iskar shaka.

Amphoteric surfactants na jerin Betaine suna da sauƙin narkewa a cikin ruwa, a cikin acid mai ƙarfi da tushe, har ma a cikin ruwan gishirin da ba na halitta ba. Ba su da sauƙin yin aiki da ƙarfen ƙasa na alkaline da sauran ions na ƙarfe. Dogon sarkar betaine yana da sauƙin narkewa a cikin ruwan matsakaici kuma pH ba ya shafar shi. Yawan ƙwayoyin carbon yana shafar yawan ƙwayoyin carbon. Yawan ƙwayoyin lauramide propyl betaine sx-lab30 da aka narkar a cikin ruwan matsakaici na iya kaiwa kashi 35%, amma narkewar homologues tare da dogon sarƙoƙin carbon yana da ƙasa sosai.

Juriyar ruwa mai tauri na surfactants yana bayyana ne a cikin juriyarsu ga ions masu tauri na calcium da magnesium da kuma ikon watsawa ga sabulun calcium. Yawancin betaine amphoteric surfactants suna nuna kyakkyawan kwanciyar hankali ga ions na calcium da magnesium. Kwanciyar calcium ion na yawancin sulfobetaine amphoteric surfactants yana da ƙarfi, yayin da ƙimar kwanciyar hankali na calcium ion na mahaɗan amine na biyu da suka dace ya yi ƙasa sosai.

Amphoteric surfactants jerin Betaine suna da wadataccen kumfa. Bayan haɗa su da anionic surfactants, ƙwayoyin suna hulɗa sosai. Tasirin kumfa da tackling yana ƙaruwa sosai. Bugu da ƙari, halayen kumfa na beet surfactants ba su shafi taurin ruwa da PH na matsakaici ba. Ana amfani da su azaman masu kumfa ko kumfa, kuma ana iya amfani da su a cikin nau'ikan PH iri-iri.