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 ... .2.00%max.2.00%max.ColourYellowRED na2s good quality sodium sulfide