Ti chung i sodium sulfide ah a cawhmi H₂S, HS⁻, S2⁻, cun aa hngatmi thilri chung i a ummi acid-a cawhmi thir sulfides, le aa tthen lomi inorganic le organic sulfides hna an i tel. Sulfide aa telmi ti cu a sen i a rim a nam tawn, a ruang bik cu H2S gas a chuah peng caah a si. Minung nih thli chung i hydrogen sulfide cu 8 μg/m3 tluk a tlawmmi ah an hmuh khawh, cu lio ah ti chung i H2S caah 0.035 μg/L a si. Sodium sulfide.

Qingdao, Tianjin, le Longkou tilawng dinhnak ah sodium sulfide chiahnak inn an um, cu hna cu kuat colh khawh an si i vawleicung pumpi ah a fekmi phawtzamhnak an ngei. A man tlawm deuhmi man hmuh awkah hika hi hmet.