... ,150ppm,80ppm,50ppm,30ppm,15ppm,5ppm Products name: Sodium Sulphide, Sodium SulfideMolecular Formula: Na2SSpecification: 60%CAS NO. 1313- ... easily oxidized when exposed to air, poisonus.Used as making sulphur dyes or dyestuff intermediate reducer, mordant, flotation ... agent, depilatory for leather, digestion auxiliary in paper-making. also widely in pigment and rubber industry, etc. sodium sulphide