... red flakes 10ppm,20ppm,30ppm,80ppm,150ppm,1500ppmMolecular formula:Na2SHS CODE:2830101000Class No.:8UN NO.:1849Property:Thin flakes,yellow or red ... as making sulphur dyestuff intermediate reducer,mordant,flotation agent,depilatory for leather,digestion auxiliary in paper-making also widely used in ...