Sodium sulfide yog ib hom siv lead ua xim sib txawv uas muaj ntxhiab tsw phem. Nws ua rau cov kua qaub ua hydrogen sulfide. Nws cov kua dej yog alkaline heev, yog li ntawd nws tseem hu ua sulfurated alkali. Nws yaj sulfur los ua sodium polysulfide. Cov khoom lag luam feem ntau zoo li xim liab, xim av liab, lossis xim av daj vim muaj cov khoom tsis huv. Nws yog corrosive thiab lom. Thaum raug cua, nws yooj yim oxidizes los ua sodium thiosulfate. Nws hygroscopic heev, nws solubility hauv 100g dej yog 15.4g (ntawm 10°C) thiab 57.3g (ntawm 90°C). Nws yog me ntsis soluble hauv ethanol thiab insoluble hauv ether.

Xaiv cov khoom siv raw zoo, kev tswj hwm zoo nruj thoob plaws hauv cov txheej txheem ntau lawm, xyuas kom ruaj khov rau txhua pawg ntawm sodium sulfide.