CAS: 16721-80-5 EC No: 240-778-0 MDL No: MFCD00011124 RTECS: WE1900000 UN No: UN2318; Haz Class: 4.2; Packing Group: II Crystalline Linear Formula: NaHS MW: 56.06 Melting Point: 350° Density (g/mL): 1.79