... Sulfuret flake 1) all kinds of sodium flakes 2) purity: 52%, 60% 3)Brand products in China Sodium Sulphide/Sodium Sulfuret ... :1500ppm2. Yellow flakespurity:60%,iron:30ppm,50ppm,80ppm,150ppm purity:52%,iron:20ppm,50ppm,150ppm Sodium Sulphide: ItemSpec.Fe3+:1500ppmFe3+:150ppmFe3 ...