sodium sulfide 1.MOQ is 1MT 2.yellow or red flakes 3.10ppm, 20ppm,30ppm,80ppm,150ppm,1500ppm 4.100 ... % gurantee sodium sulfideyellow or red flakes 10ppm,20ppm,30ppm,80ppm,150ppm,1500ppmMolecular formula:Na2SHS CODE ... :2830101000Class No.:8UN NO.:1849Property:Thin flakes,yellow or red,soluble in water,presenting strong alkaline solution,easily oxidized ...