SODIUM SULFIDE, Na2S Purity: 60%Min Red/Yellow Flake Fe:30ppm,60ppm, ... ,150ppm,300ppm,1500ppm 25kg PP woven bag Professional manufactory of Sodium sulphide60% red and yellow flakes, withFe content of 30ppm, 60ppm ... :Na2S(%) 60.0MinNa2CO3(%) 2.0MaxWater Insoluble(%) 0.2maxFe 80ppm max30PPM SODIUM SULPHIDENa2S 60.0%MinNa2CO3 2.0%MaxWater Insoluble 0.05 ...