Sodium sulfide ndi kristalo wamitundu yosiyanasiyana wokhala ndi fungo lonyansa. Amachita ndi ma acid kuti apange hydrogen sulfide. Madzi ake ndi amchere kwambiri, motero amadziwikanso kuti sulfure alkali. Amasungunula sulfure kuti apange sodium polysulfide. Zinthu zopangidwa m'mafakitale nthawi zambiri zimawoneka ngati zotupa za pinki, zofiirira, kapena zachikasu chifukwa cha zinthu zosafunika. Ndi zowononga komanso zoopsa. Zikayikidwa mumlengalenga, zimasungunuka mosavuta kuti zipange sodium thiosulfate. Popeza ndi hygroscopic kwambiri, kusungunuka kwake mu 100g ya madzi ndi 15.4g (pa 10°C) ndi 57.3g (pa 90°C). Zimasungunuka pang'ono mu ethanol ndipo sizisungunuka mu ether.

Kusankha zipangizo zapamwamba kwambiri, kuwongolera bwino khalidwe panthawi yonse yopangira, kuonetsetsa kuti sodium sulfide ili ndi khalidwe lokhazikika pa gulu lililonse la zinthu.