... Fe:1500ppm,150ppm,80ppm,50ppm,30ppm,15ppm,5ppm Products name: Sodium Sulphide, Sodium SulfideMolecular Formula: Na2SSpecification: 60%CAS NO. 1313-82-2H ... reducer, mordant, flotation agent, depilatory for leather, digestion auxiliary in paper-making. also widely in pigment and rubber industry, etc ...