Sodium sulfide i crystal ya muvala wo cinca cinca leyingana nun’hwelo wo nyenyetsa. Yi endla nhluvuko na ti acid leswaku yi humesa hydrogen sulfide. Nkatsakanyo wa yona wa mati wuna alkaline swinene, hikokwalaho wutlhela wutiveka tani hi sulphurated alkali. Yi n’okisela sulphur leswaku yi endla sodium polysulfide. Switirhisiwa swa ti indasitiri switala kuvonaka tani hi swirhumbana swa pink, reddish-brown kumbe yellowish-brown hikokwalaho ka thyaka. Yi onha naswona yi ni chefu. Loko yi hlangana na moya, yi hatlisa yi oxidize kuva yi endla sodium thiosulfate. Yiva na hygroscopic yale henhla, ku n’oka ka yona eka 100g ya mati i 15.4g (eka 10°C) na 57.3g (eka 90°C). Yi khuluka nyana eka ethanol naswona ayi khuluki eka ether.

Switirhisiwa swa xiyimo xale henhla leswi hlawuriweke, vulawuri byo tika bya khwalithi eka maendlelo hinkwawo ya vuhumelerisi, ku tiyisisa khwalithi leyi tiyeke eka ntlawa wun’wana na wun’wana wa sodium sulfide.