Sodium sulfide, ikintu kidahinduka kandi kizwi kandi nka alkali ihumura, soda ihumura, alkali y'umuhondo, cyangwa alkali ya sulfide, ni ifu idafite ibara mu buryo bwayo busanzwe. Irahuzwa cyane kandi ishongera mu mazi, igatanga umuti w'amazi ugaragaza imiterere ikomeye ya alkali. Gukora ku ruhu cyangwa umusatsi bishobora gutera ubushye, niyo mpamvu izina ryayo risanzwe ari "alkali ya sulfide." Iyo ihuye n'umwuka, umuti w'amazi wa sodium sulfide ugenda uhinduka buhoro buhoro ugahinduka sodium thiosulfate, sodium sulfite, sodium sulfate, na sodium polysulfide. Muri ibyo, sodium thiosulfate ikorwa ku muvuduko wihuta, bigatuma iba ikintu cy'ingenzi gikozwe muri oxidation. Sodium sulfide kandi ikunze kugira ububobere n'ibyuka bihumanya mu mwuka, bigatera kubora no kurekura umwuka wa hydrogen sulfide buri gihe. Sodium sulfide yo mu rwego rw'inganda ikunze kuba irimo imyanda, itanga amabara nka roza, umutuku wijimye, cyangwa umuhondo wijimye. Uburemere bwihariye, aho ishongesha, n'aho ishyuha by'ikintu bishobora gutandukana bitewe n'ingaruka z'iyi myanda.

Sodium sulfide ifite icyemezo cya SGS cy’uruhande rwa gatatu, icyemezo cy’urwego rw’inganda, kandi yatsinze icyemezo cya ISO mpuzamahanga cy’ubuziranenge n’icyemezo cyo kubahiriza amategeko ya REACH.