Superoxides feem ntau yog cov sib xyaw ua ke los ntawm cov hlau ions thiab superoxide ions. Nws cov hom tseem ceeb yog sodium superoxide (Na2O4) (tseem hu ua NaO2) thiab potassium superoxide (K2O4) (tseem hu ua KO2). Potassium, rubidium, cesium, calcium, strontium thiab barium tuaj yeem tsim superoxide, uas yog tus cwj pwm los ntawm kev muaj superoxide ion O2 hauv cov molecule.
Superoxide yog ib qho yooj yim rau deliquescence. Thaum rhuab, nws yuav tso tawm oxygen, uas tsis ruaj khov nyob rau hauv cov xwm thiab muaj zog oxidation thiab noo noo nqus. Thaum muab tso rau hauv huab cua, nws tuaj yeem hnov mob nrog dej thiab carbon dioxide los tsim cov carbonate thiab tso pa tawm tib lub sijhawm. Raws li cov cuab yeej no, lawv yog cov khoom siv tseem ceeb ntawm cov pa oxygen regeneration tshuaj phaj, thiab kuj tseem siv los ua cov pa ua pa tawm ntawm lub ntsej muag oxygen cais tawm. Qhov sib npaug ntawm cov tshuaj tiv thaiv saum toj no yog raws li hauv qab no (siv K2O4 ua piv txwv):
K2O4 plus 2H2O=2KOH plus H2O2 plus O2↑
2K2O4 plus 2CO2=2K2CO3 plus 3O2
