Quicklime feem ntau muaj cov txiv qaub dhau. Overburnt txiv qaub slakes maj mam, thiab yog tias slaking tshwm sim tom qab cov txiv qaub slurry tau hardened, qhov expansion tshwm sim los ntawm slaking yuav ua rau bulging thiab tawg. Txhawm rau tshem tawm qhov txaus ntshai ntawm cov txiv qaub dhau, nws yuav tsum tau tso cai rau "hnub nyoog" li ob lub lis piam tom qab slaking.
Nws yog dawb (los yog grey, brownish-dawb) nyob rau hauv tsos, amorphous, thiab absorbs dej thiab carbon dioxide los ntawm huab cua. Calcium oxide reacts nrog dej los tsim calcium hydroxide, tso cua sov. Nws yog soluble hauv acidic dej tab sis insoluble hauv cawv. Nws yog ib qho inorganic alkaline corrosive yam khoom, cais raws li cov khoom txaus ntshai (National Hazardous Goods Code 95006). Quicklime reacts chemically nrog dej, tam sim ntawd cua sov kom kub tshaj 100 degree.
