... 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 ... No.:8UN NO.:1849Property:Thin flakes,yellow or red,soluble in water,presenting strong alkaline solution,easily ... 2.00%max.2.00%max.ColourYellowRED na2s good quality sodium sulfide